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1002 Olbersia (1923 OB)
Classification: Main-belt Asteroid          SPK-ID: 2001002
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1542570761630073 4.8686e-08  
a 2.786691394526593 1.4978e-08 au
q 2.356824527838307 1.3338e-07 au
i 10.76836939855308 5.5952e-06 deg
node 343.7591405689395 2.5772e-05 deg
peri 355.5697923224205 2.9803e-05 deg
M 339.809885330153 1.812e-05 deg
tp 2457695.794541830732
(2016-Nov-03.29454183)
8.595e-05 JED
period 1699.150085080884
4.65
1.3699e-05
3.751e-08
d
yr
n .2118706305940379 1.7082e-09 deg/d
Q 3.216558261214878 1.7289e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1504  
   data-arc span      29647 days (81.17 yr)  
   first obs. used      1935-02-08  
   last obs. used      2016-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50324  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:31:25  

Additional Information
 Earth MOID = 1.34757 au 
 Jupiter MOID = 2.16951 au 
 T_jup = 3.288 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.9 mag n/a MPO337251  
diameter diameter 32.13 km 2.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 10.244 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
geometric albedo albedo 0.0621   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

1002 Olbersia (1923 OB)          Discovered 1923-Aug-15 by Albitzkij, V. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1923 OB = 1956 UR 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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