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JPL Small-Body Database Browser
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485 Genua (A902 JC)
Classification: Main-belt Asteroid          SPK-ID: 2000485
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 80 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1924855315627264 3.1522e-08  
a 2.74884767873612 7.9558e-09 au
q 2.219734272109632 8.6523e-08 au
i 13.86595088129398 4.2315e-06 deg
node 193.4373293165662 1.3862e-05 deg
peri 272.3557679648218 1.762e-05 deg
M 334.4330905511031 1.1649e-05 deg
tp 2458718.722508988694
(2019-Aug-23.22250899)
5.3933e-05 TDB
period 1664.655766118264
4.56
7.2269e-06
1.979e-08
d
yr
n .2162609275306617 9.3886e-10 deg/d
Q 3.277961085362608 9.4872e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2489  
   data-arc span      42935 days (117.55 yr)  
   first obs. used      1902-05-10  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48976  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:08:08  

Additional Information
 Earth MOID = 1.28699 au 
 Jupiter MOID = 2.06888 au 
 T_jup = 3.278 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.3   n/a MPO431496  
diameter diameter 63.88 km 2.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
rotation period rot_per 17.59 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Carlsson, M.; Lagerkvist, C.-I. (1981) Astron. Astrophys. Suppl. Ser. 44, 15-22.]
[Behrend, R. (2004) 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 0.2072   0.020 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 22
B-V BV 0.848   0.004 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.46, mean=5.59, max.=8.28) deg.
U-B UB 0.427   0.010 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.46, mean=5.59, max.=8.28) deg.
SMASSII spectral type spec_B S   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)

485 Genua (A902 JC)          Discovered 1902-May-07 by Carnera, L. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A902 JC = 1933 FZ1 = 1934 HA = 1953 PP = 1977 VY1 = A904 SA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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