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Welcome to the new PVOL

PVOL stands for Planetary Virtual Observatory and Laboratory and is a searchable database of ground-based observations of solar system planets. The images are made available by amateur astronomers and are used for research purposes by several professional and amateur teams and for astronomy popularization. The current PVOL2.0 service is a modernized version of the previous PVOL server. PVOL2 hosts all previous data and amateur images of all Solar System planets and major satellites. PVOL has been redesigned to include new functionalities and a clearer layout.

Acknowledgement: We sincerely acknowledge the generosity of the large community of amateur astronomers in making their observations of solar system planets available to the scientific community and the general public. This project is part of VESPA (Virtual European Solar and Planetary Access), which is part of Europlanet 2020 RI. Europlanet 2020 RI has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 654208.

How to navigate through the website

The top menu will guide you to different sections of the website. Try Search data to find data. Submit your images by e-mail to: pvol@ehu.eus.

Latest, relevant news

Uranus bright feature

2018-10-28

Recent observations by Blake Estes acquired on 22 October 2018 using the 60'' Mount Wilson telescope show a bright cloud feature at the border of the bright polar hood. This feature might be the one previously temptatively observed by Jocelyn Serot on 27-09-2018 with amateur equipment.

The new feature is similar to storms previously observed in Uranus at similar latitudes but more observations are needed to study the nature of this feature.

Links:

Mars global storm

2018-06-08

Mars storm Mars is getting closer to its opposition in July just at the right time in its dusty season. After several detections of regional dust storms in the planet a global storm in Mars is on its development stage. Images by J. Rueck, D. Milika and P. Nicholas and D. Peach among other observers show the onset of this new large-scale storm. Orbiters around Mars are following the extension and growth of the current storm. A report from the MARCI instrument on the MRO mission is available here.

The image on the right compiled by Agustin Sanchez Lavega shows a comparison of amateur observations with data from the MARCI instrument on Mars Recoinnassance Orbiter.

We encourage all observers to image this Mars dust storm. The five most recent planetary storms detected in Mars occurred in 1977, 1982, 1994, 2001 and 2007. Typical global storms on Mars can develop and lasts over time-scales of a month or longer.

Saturn's Equatorial Storm

2018-04-22

Saturn continues to display interesting atmospheric activity to the reach of amateur equipment. An equatorial bright storm with two sides and located at planetographic latitude +6.0 has been observed by several observers since February and notably over April. The feature is probably the same equatorial bright feature observed since 2014 and has been object of recent scientific research(Sanchez-Lavega et al., Nature Communications, 2016).

Here are ephemeris of its transits over Saturn's CM using System I. Note that besides the prominent Equatorial and polar storms some other repeated features are observed also in the planet at latitudes +20 to +60.

WinJUPOS 10.2.2 (Saturn), C.M. transit times, 2018/05/16  16:41
Object longitude: L1 = 348,4° -  3,8516°/d * (T - 2018 Apr 01,5)
Time interval: 2018 Apr 01,0 ... 2018 Jun 01,0
Output format: Date UT (C.M. of System 1)
------------------------------------------------------------------------------
2018 Apr 01   02:58 ( 350°)   13:10 ( 348°)   23:21 ( 347°)
2018 Apr 02   09:32 ( 345°)   19:43 ( 343°)
2018 Apr 03   05:54 ( 342°)   16:05 ( 340°)
2018 Apr 04   02:17 ( 339°)   12:28 ( 337°)   22:39 ( 335°)
2018 Apr 05   08:50 ( 333°)   19:01 ( 332°)
2018 Apr 06   05:12 ( 330°)   15:24 ( 329°)
2018 Apr 07   01:35 ( 327°)   11:46 ( 325°)   21:57 ( 324°)
2018 Apr 08   08:08 ( 322°)   18:19 ( 320°)
2018 Apr 09   04:31 ( 319°)   14:42 ( 317°)
2018 Apr 10   00:53 ( 316°)   11:04 ( 314°)   21:15 ( 312°)
2018 Apr 11   07:26 ( 310°)   17:38 ( 309°)
2018 Apr 12   03:49 ( 308°)   14:00 ( 306°)
2018 Apr 13   00:11 ( 304°)   10:22 ( 302°)   20:33 ( 301°)
2018 Apr 14   06:45 ( 299°)   16:56 ( 298°)
2018 Apr 15   03:07 ( 296°)   13:18 ( 294°)   23:29 ( 293°)
2018 Apr 16   09:40 ( 291°)   19:51 ( 289°)
2018 Apr 17   06:03 ( 288°)   16:14 ( 286°)
2018 Apr 18   02:25 ( 284°)   12:36 ( 283°)   22:47 ( 281°)
2018 Apr 19   08:58 ( 279°)   19:10 ( 278°)
2018 Apr 20   05:21 ( 276°)   15:32 ( 275°)
2018 Apr 21   01:43 ( 273°)   11:54 ( 271°)   22:05 ( 270°)
2018 Apr 22   08:16 ( 268°)   18:28 ( 267°)
2018 Apr 23   04:39 ( 265°)   14:50 ( 263°)
2018 Apr 24   01:01 ( 262°)   11:12 ( 260°)   21:23 ( 258°)
2018 Apr 25   07:35 ( 257°)   17:46 ( 255°)
2018 Apr 26   03:57 ( 253°)   14:08 ( 252°)
2018 Apr 27   00:19 ( 250°)   10:30 ( 248°)   20:41 ( 247°)
2018 Apr 28   06:53 ( 245°)   17:04 ( 244°)
2018 Apr 29   03:15 ( 242°)   13:26 ( 240°)   23:37 ( 239°)
2018 Apr 30   09:48 ( 237°)   19:59 ( 235°)
2018 May 01   06:11 ( 234°)   16:22 ( 232°)
2018 May 02   02:33 ( 231°)   12:44 ( 229°)   22:55 ( 227°)
2018 May 03   09:06 ( 225°)   19:17 ( 224°)
2018 May 04   05:29 ( 223°)   15:40 ( 221°)
2018 May 05   01:51 ( 219°)   12:02 ( 217°)   22:13 ( 216°)
2018 May 06   08:24 ( 214°)   18:35 ( 212°)
2018 May 07   04:47 ( 211°)   14:58 ( 209°)
2018 May 08   01:09 ( 208°)   11:20 ( 206°)   21:31 ( 204°)
2018 May 09   07:42 ( 203°)   17:53 ( 201°)
2018 May 10   04:05 ( 200°)   14:16 ( 198°)
2018 May 11   00:27 ( 196°)   10:38 ( 195°)   20:49 ( 193°)
2018 May 12   07:00 ( 191°)   17:11 ( 189°)
2018 May 13   03:23 ( 188°)   13:34 ( 187°)   23:45 ( 185°)
2018 May 14   09:56 ( 183°)   20:07 ( 181°)
2018 May 15   06:18 ( 180°)   16:29 ( 178°)
2018 May 16   02:41 ( 177°)   12:52 ( 175°)   23:03 ( 173°)
2018 May 17   09:14 ( 172°)   19:25 ( 170°)
2018 May 18   05:36 ( 168°)   15:47 ( 167°)
2018 May 19   01:58 ( 165°)   12:10 ( 164°)   22:21 ( 162°)
2018 May 20   08:32 ( 160°)   18:43 ( 159°)
2018 May 21   04:54 ( 157°)   15:05 ( 155°)
2018 May 22   01:16 ( 153°)   11:28 ( 152°)   21:39 ( 151°)
2018 May 23   07:50 ( 149°)   18:01 ( 147°)
2018 May 24   04:12 ( 145°)   14:23 ( 144°)
2018 May 25   00:34 ( 142°)   10:46 ( 141°)   20:57 ( 139°)
2018 May 26   07:08 ( 137°)   17:19 ( 136°)
2018 May 27   03:30 ( 134°)   13:41 ( 132°)   23:52 ( 131°)
2018 May 28   10:03 ( 129°)   20:15 ( 128°)
2018 May 29   06:26 ( 126°)   16:37 ( 124°)
2018 May 30   02:48 ( 123°)   12:59 ( 121°)   23:10 ( 119°)
2018 May 31   09:21 ( 117°)   19:33 ( 116°)
------------------------------------------------------------------------------

URGENT: Saturn polar storm

2018-03-31

Maciel Bassani Sparrengerger has imaged a bright spot on Saturn CM on March 29 at 08:16:05 UT that has later been confirmed by several observers.

http://alpo-j.asahikawa-med.ac.jp/kk18/s180329z.htm

Updated ephemeris of this feature based on images from 29 March to 22 April are given below as calculated by Marc Delcroix. Urgent observations are required at all longitudes to follow the storm evolution, and search for other possible spots.

WinJUPOS 10.3.9 (Saturn), C.M. transit times, 2018/04/22  00:32
Object longitude: L3 = 181,8° - 11,7054°/d * (T - 2018 Apr 10,5)
Time interval: 2018 Mar 25,0 ... 2018 Jun 01,0
Output format: Date UT (C.M. of System 3)
------------------------------------------------------------------------------
2018 Mar 29   08:16 ( 324°)   18:46 ( 319°)
2018 Mar 30   05:16 ( 314°)   15:46 ( 308°)
2018 Mar 31   02:17 ( 304°)   12:47 ( 299°)   23:17 ( 293°)
2018 Apr 01   09:47 ( 288°)   20:18 ( 283°)
2018 Apr 02   06:48 ( 278°)   17:18 ( 273°)
2018 Apr 03   03:48 ( 268°)   14:19 ( 263°)
2018 Apr 04   00:49 ( 258°)   11:19 ( 252°)   21:49 ( 247°)
2018 Apr 05   08:19 ( 242°)   18:50 ( 237°)
2018 Apr 06   05:20 ( 232°)   15:50 ( 227°)
2018 Apr 07   02:20 ( 221°)   12:51 ( 217°)   23:21 ( 211°)
2018 Apr 08   09:51 ( 206°)   20:21 ( 201°)
2018 Apr 09   06:52 ( 196°)   17:22 ( 191°)
2018 Apr 10   03:52 ( 186°)   14:22 ( 181°)
2018 Apr 11   00:52 ( 175°)   11:23 ( 171°)   21:53 ( 165°)
2018 Apr 12   08:23 ( 160°)   18:53 ( 155°)
2018 Apr 13   05:24 ( 150°)   15:54 ( 145°)
2018 Apr 14   02:24 ( 140°)   12:54 ( 134°)   23:24 ( 129°)
2018 Apr 15   09:55 ( 124°)   20:25 ( 119°)
2018 Apr 16   06:55 ( 114°)   17:25 ( 109°)
2018 Apr 17   03:56 ( 104°)   14:26 (  99°)
2018 Apr 18   00:56 (  94°)   11:26 (  88°)   21:56 (  83°)
2018 Apr 19   08:27 (  78°)   18:57 (  73°)
2018 Apr 20   05:27 (  68°)   15:57 (  63°)
2018 Apr 21   02:27 (  57°)   12:58 (  53°)   23:28 (  48°)
2018 Apr 22   09:58 (  42°)   20:28 (  37°)
2018 Apr 23   06:59 (  32°)   17:29 (  27°)
2018 Apr 24   03:59 (  22°)   14:29 (  17°)
2018 Apr 25   00:59 (  11°)   11:30 (   7°)   22:00 (   1°)
2018 Apr 26   08:30 ( 356°)   19:00 ( 351°)
2018 Apr 27   05:30 ( 346°)   16:01 ( 341°)
2018 Apr 28   02:31 ( 336°)   13:01 ( 331°)   23:31 ( 325°)
2018 Apr 29   10:01 ( 320°)   20:32 ( 315°)
2018 Apr 30   07:02 ( 310°)   17:32 ( 305°)
2018 May 01   04:02 ( 300°)   14:33 ( 295°)
2018 May 02   01:03 ( 290°)   11:33 ( 285°)   22:03 ( 279°)
2018 May 03   08:33 ( 274°)   19:04 ( 269°)
2018 May 04   05:34 ( 264°)   16:04 ( 259°)
2018 May 05   02:34 ( 254°)   13:04 ( 248°)   23:35 ( 244°)
2018 May 06   10:05 ( 239°)   20:35 ( 233°)
2018 May 07   07:05 ( 228°)   17:35 ( 223°)
2018 May 08   04:06 ( 218°)   14:36 ( 213°)
2018 May 09   01:06 ( 208°)   11:36 ( 202°)   22:06 ( 197°)
2018 May 10   08:37 ( 193°)   19:07 ( 187°)
2018 May 11   05:37 ( 182°)   16:07 ( 177°)
2018 May 12   02:37 ( 172°)   13:08 ( 167°)   23:38 ( 162°)
2018 May 13   10:08 ( 156°)   20:38 ( 151°)
2018 May 14   07:08 ( 146°)   17:39 ( 141°)
2018 May 15   04:09 ( 136°)   14:39 ( 131°)
2018 May 16   01:09 ( 126°)   11:39 ( 120°)   22:10 ( 116°)
2018 May 17   08:40 ( 110°)   19:10 ( 105°)
2018 May 18   05:40 ( 100°)   16:10 (  95°)
2018 May 19   02:41 (  90°)   13:11 (  85°)   23:41 (  80°)
2018 May 20   10:11 (  74°)   20:41 (  69°)
2018 May 21   07:11 (  64°)   17:42 (  59°)
2018 May 22   04:12 (  54°)   14:42 (  49°)
2018 May 23   01:12 (  44°)   11:42 (  38°)   22:13 (  34°)
2018 May 24   08:43 (  28°)   19:13 (  23°)
2018 May 25   05:43 (  18°)   16:13 (  13°)
2018 May 26   02:44 (   8°)   13:14 (   3°)   23:44 ( 358°)
2018 May 27   10:14 ( 352°)   20:44 ( 347°)
2018 May 28   07:15 ( 342°)   17:45 ( 337°)
2018 May 29   04:15 ( 332°)   14:45 ( 327°)
2018 May 30   01:15 ( 322°)   11:46 ( 317°)   22:16 ( 312°)
2018 May 31   08:46 ( 306°)   19:16 ( 301°)
------------------------------------------------------------------------------

Jupiter alert: Convective outbreak in Jupiter's South Temperate Belt

2018-02-05

A convective outbreak in the South Temperate Belt has started in the region previously covered by the STB Ghost and following oval BA. Observations by Anthony Wesley and Damian Peach show the initial stages of this storm on February 4. Additional images by Jim Phillips indicate the activity probably started around February 2.

The outbreak is located at longitude 310.8 and planetographic latitude -30.5. It is best observed in IR750nm wavelength and is bright in 890nm images.

Images of this feature will be of high importance as the convection eruption evolves and interacts with the cyclonic region west of BA. Because convective features evolve quickly observations are needed in time-scales of hours at the start of these events and in days and weeks over the evolution of these features.

Jupiter report from John Rogers

2018-01-20

John Rogers from the British Astronomical Association summarizes the current state of the atmosphere of Jupiter and expected activity in the planet.
https://britastro.org/node/12201

Reports on JunoCam images by John Rogers are available on:
https://britastro.org/node/7982

The following page, with useful information about the Juno perijoves, will also carry his future reports on JunoCam images:
https://www.britastro.org/node/12137

Neptune equatorial features

2017-11-08

Updated on 2017-12-04

Amateur observations of an equatorial bright large cloud in Neptune since June-July and over October and November have allowed to folow different cloud systems over the planet. Equatorial features followed by amateur astronomers in this period includ the close interaction of two equatorial clouds in November 6-10 and what appears to be a chain of equatorial clouds visible afterwards.

Many amateurs now (most notably Phil Miles, Darryl Milika and Pat Nicholas) have observed these cloud systems repeteadly providing very useful data to study this unusual equatorial cloud activity in the planet.

Updated ephemeris of the bright equatorial cloud are given below and have been calculated by Marc Delcroix.

WinJUPOS 10.3.5 (Neptune), C.M. transit times, 2017/12/03  21:05
Object longitude: L = 218,6° + 47,4020°/d * (T - 2017 Oct 22,5)
Time interval: 2017 Dec 01,0 ... 2018 Feb 01,0
Output format: Date UT (C.M. of System 1)
------------------------------------------------------------------------------
2017 Dec 01   09:08 ( 309°)
2017 Dec 02   02:48 ( 344°)   20:29 (  19°)
2017 Dec 03   14:09 (  54°)
2017 Dec 04   07:50 (  89°)
2017 Dec 05   01:30 ( 124°)   19:10 ( 158°)
2017 Dec 06   12:51 ( 193°)
2017 Dec 07   06:31 ( 228°)
2017 Dec 08   00:12 ( 263°)   17:52 ( 298°)
2017 Dec 09   11:33 ( 333°)
2017 Dec 10   05:13 (   8°)   22:54 (  43°)
2017 Dec 11   16:34 (  78°)
2017 Dec 12   10:15 ( 113°)
2017 Dec 13   03:55 ( 148°)   21:35 ( 182°)
2017 Dec 14   15:16 ( 217°)
2017 Dec 15   08:56 ( 252°)
2017 Dec 16   02:37 ( 287°)   20:17 ( 322°)
2017 Dec 17   13:58 ( 357°)
2017 Dec 18   07:38 (  32°)
2017 Dec 19   01:19 (  67°)   18:59 ( 102°)
2017 Dec 20   12:40 ( 137°)
2017 Dec 21   06:20 ( 171°)
2017 Dec 22   00:01 ( 207°)   17:41 ( 241°)
2017 Dec 23   11:21 ( 276°)
2017 Dec 24   05:02 ( 311°)   22:42 ( 346°)
2017 Dec 25   16:23 (  21°)
2017 Dec 26   10:03 (  56°)
2017 Dec 27   03:44 (  91°)   21:24 ( 126°)
2017 Dec 28   15:05 ( 161°)
2017 Dec 29   08:45 ( 195°)
2017 Dec 30   02:26 ( 231°)   20:06 ( 265°)
2017 Dec 31   13:47 ( 300°)
2018 Jan 01   07:27 ( 335°)
2018 Jan 02   01:08 (  10°)   18:48 (  45°)
2018 Jan 03   12:28 (  80°)
2018 Jan 04   06:09 ( 115°)   23:49 ( 150°)
2018 Jan 05   17:30 ( 185°)
2018 Jan 06   11:10 ( 219°)
2018 Jan 07   04:51 ( 254°)   22:31 ( 289°)
2018 Jan 08   16:12 ( 324°)
2018 Jan 09   09:52 ( 359°)
2018 Jan 10   03:33 (  34°)   21:13 (  69°)
2018 Jan 11   14:54 ( 104°)
2018 Jan 12   08:34 ( 139°)
2018 Jan 13   02:15 ( 174°)   19:55 ( 209°)
2018 Jan 14   13:36 ( 244°)
2018 Jan 15   07:16 ( 278°)
2018 Jan 16   00:56 ( 313°)   18:37 ( 348°)
2018 Jan 17   12:17 (  23°)
2018 Jan 18   05:58 (  58°)   23:38 (  93°)
2018 Jan 19   17:19 ( 128°)
2018 Jan 20   10:59 ( 163°)
2018 Jan 21   04:40 ( 198°)   22:20 ( 233°)
2018 Jan 22   16:01 ( 268°)
2018 Jan 23   09:41 ( 302°)
2018 Jan 24   03:22 ( 337°)   21:02 (  12°)
2018 Jan 25   14:42 (  47°)
2018 Jan 26   08:23 (  82°)
2018 Jan 27   02:03 ( 117°)   19:44 ( 152°)
2018 Jan 28   13:24 ( 187°)
2018 Jan 29   07:05 ( 222°)
2018 Jan 30   00:45 ( 256°)   18:26 ( 292°)
2018 Jan 31   12:06 ( 326°)
------------------------------------------------------------------------------

Saturn observations requested by Cassini

2017-04-12

The Cassini mission: Imaging Sub-System (ISS), Composite Infrared Spectrometer (CIRS) and Visible-Near Infrared Mapping Spectrometer (VIMS) will be getting very high-resolution observations soon (2017 April 26) during the spacecraft’s initial “dive” between the planet and the inner rings. The ISS images will have a very restricted coverage of the atmosphere, so observations from the Earth are being solicited by Dr. Linda Spilker, Cassini Chief Scientist and the different instrument teams. Best times for observations will be ffrom UTC 07:48:11 to 12:22:11 but any close in time observations will be very useful.
  • ISS captures high resolution WAC images of the upper atmosphere as its field of view skims across the North Pole towards the equator, outlining what is affectionately called “the noodle.” The main target of the noodle is north equatorial latitudes from about 20 deg North (when the camera reaches around 500m/pix resolution) to about -8 deg South (where Saturn is shadowed by the rings). CIRS will get 2km resolution, about 20x higher resolution then limb sounding and perhaps 100x higher than previous nadir observations. VIMS will be able to get about 50x better pixel resolution than our previous best images. During the HGA-to-Ram pointed time, ISS observes the best resolution of about 200 m/pixel (10x better than previous images), looking for small convective clouds for the clouds revealing the waves in Saturn's atmosphere. Those clouds and waves may indicate deep thunderstorms in the atmosphere.

Message sent by Dr. Glenn S. Orton (JPL/NASA) on behalf of Dr. Linda Spilker (Cassini Chief Scientist).

Intense changes in Jupiter's long lived North Tropical Oval (WZ)

2017-02-08

The Jupiter outbreak in the North Temperate Belt (NTB) that started in October 2016 has severely modified the aspect of the long lived North Tropical Oval called WZ. This oval formed from the merger of two other smaller ovals in 2012 (one of them present since 2008), and has experienced interesting color changes from white to red and back to white during its history.

Observations obtained at the Pic Du Midi on November 2 show the latest images of this oval at the time of its interaction with the outbreak in the North Temperate Belt. The latest maps of the planet from January 30 compiled by Marco Vedovado shows this feature with low contrast and is only apparent in the higher resolution images. The oval, is still present in the atmosphere with a different coloration, cloud morphology and size as this image from Phil Miles shows. We urge continuous observations in particular in blue, violet and ultraviolet and in the 890nm methane absorption band to characterize its color and constraint the altitude of the remains of this oval.

Jupiter: Outbreak in the SEB

2016-12-30

Jupiter observations by Phil Miles show the development of a convective outbreak within Jupiter's South Equatorial Belt (SEB). The SEB is currently in a "non-Fade" stage. This source has erupted on a "whitish" spot according to previous images by Tiziano Olivetti on December 23. The convective source is at B" -16º and 301º (III). It is important to track its evolution, i. e. if it develops into a planetary-scale disturbance or if it is just dispersed by the horizontal wind shear.

2017-01-07: A first report of this activity is now available at the BAA thanks to John Rogers:

https://britastro.org/node/8817

Juno perijoves

2016-11-03

Dr. Glenn Orton from the Juno mission has provided the following list of Juno perijoves. Amateur observations closely before and after these dates will be very useful to the scientists on Juno.

Dates of Juno Perijoves

Read all the news