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JPL Small-Body Database Browser
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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
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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

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Alternate Designations
 1929 WG = 1929 WC1 = 1958 BG = A901 VG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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