Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
1655 Comas Sola (1929 WG)
Classification: Main-belt Asteroid          SPK-ID: 2001655
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2354484589891983 3.5667e-08  
a 2.779324143370796 9.1347e-09 au
q 2.124936556782669 9.9357e-08 au
i 9.601126485663363 3.4624e-06 deg
node 111.1335590030542 2.9723e-05 deg
peri 323.4849248848734 3.097e-05 deg
M 91.4525345750986 9.4015e-06 deg
tp 2458170.567305577343
(2018-Feb-21.06730558)
4.3617e-05 TDB
period 1692.416407169759
4.63
8.3436e-06
2.284e-08
d
yr
n .2127136078774081 1.0487e-09 deg/d
Q 3.433711729958924 1.1285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2425  
   data-arc span      43019 days (117.78 yr)  
   first obs. used      1901-11-05  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43025  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:19:14  

Additional Information
 Earth MOID = 1.14865 au 
 Jupiter MOID = 1.86678 au 
 T_jup = 3.273 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.1   n/a MPO492769 IRAS observations used: 3
diameter diameter 35.943 km 0.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 20.456 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Addleman, D.; Covele, B.; Duncan, A.; Johnson, J.; et al. (2005) Minor Planet Bull. 32, 76-78.]
[Stephens, R.D. (2009) Minor Planet Bull. 36, 125-126.]
geometric albedo albedo 0.045   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.642   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=12.19 deg.
U-B UB 0.262   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=12.19 deg.
Tholen spectral type spec_T XFU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1655 Comas Sola           Discovered 1929 Nov. 28 by J. Comas Sola at Barcelona.
Named by the Fabra Observatory in memory of Josep Comas Sola (1868-1937), first director of the Fabra Observatory, Barcelona, and a well-known observer of minor planets and comets for many years. Among his discoveries were the short-period comet Comas Sola and 11 numbered minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5357Last Updated: 2006-03-21

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1937-Jul-19 00:04 00:01 Jupiter 1.93785561898117 1.93785510510044 1.937856132864 2.75884006622756 2.59557568582596 2428733.502845128 1.12685557107513 126.629411433317 10.2029880076256 82.905964792257 3042788.30085314 T 35 CATAB v2.0f-lin.ifort 2019-Sep-23 19:19:28 2019-Sep-23 19:19
1960-May-08 00:35 < 00:01 Jupiter 1.881785286643 1.8817849786103 1.88178559467581 2.21990556264433 2.0069249622127 2437062.524486618 0.770247290139291 100.889349183494 28.1744673949908 86.0810323880517 2546080.30392024 T 35 CATAB v2.0f-lin.ifort 2019-Sep-23 19:19:28 2019-Sep-23 19:19
2044-May-04 07:27 < 00:01 Jupiter 1.93099186444143 1.93099153139282 1.93099219749037 2.7435627481962 2.57872911941518 2467739.810193649 0.489255254300267 75.8432116198912 10.0218917940046 82.0473359094673 3263463.23026182 T 35 CATAB v2.0f-lin.ifort 2019-Sep-23 19:19:28 2019-Sep-23 19:19
2067-Feb-21 19:29 < 00:01 Jupiter 1.87935682228544 1.8793564677007 1.87935717687018 2.26327228813117 2.05450852652691 2476068.311646283 0.818413915990225 95.6420767818868 28.0753504379347 86.5467349144257 2733105.80835939 T 35 CATAB v2.0f-lin.ifort 2019-Sep-23 19:19:28 2019-Sep-23 19:19
2151-Feb-18 20:08 00:02 Jupiter 1.91675707864428 1.91675636608686 1.91675779120922 2.71296024925877 2.54486648428926 2506745.339198561 2.03924880477783 215.179920295998 10.1871489056494 83.7975768464887 2978336.30965561 T 35 CATAB v2.0f-lin.ifort 2019-Sep-23 19:19:28 2019-Sep-23 19:19
2173-Dec-09 13:56 00:02 Jupiter 1.87584053740713 1.87583999835131 1.87584107646508 2.30492617772492 2.09990448414424 2515075.080268055 2.35747501376807 168.298344912344 34.4204293246518 -80.9791752779181 2611882.98171209 T 35 CATAB v2.0f-lin.ifort 2019-Sep-23 19:19:28 2019-Sep-23 19:19

Alternate Designations
 1929 WG = 1929 WC1 = 1958 BG = A901 VG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-19 04:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin