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585 Bilkis (A906 DF)
Classification: Main-belt Asteroid          SPK-ID: 2000585
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1281374776247653 2.705e-08  
a 2.430597162713283 5.5098e-09 au
q 2.119146573161292 6.5309e-08 au
i 7.567198554996581 3.3213e-06 deg
node 180.2814568554456 2.364e-05 deg
peri 328.8937600537019 2.7338e-05 deg
M 64.6873917369233 1.3491e-05 deg
tp 2458751.794696587830
(2019-Sep-25.29469659)
5.1865e-05 TDB
period 1384.101396335566
3.79
4.7063e-06
1.289e-08
d
yr
n .2600965514182029 8.844e-10 deg/d
Q 2.742047752265274 6.2158e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3515  
   data-arc span      41881 days (114.66 yr)  
   first obs. used      1906-02-16  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42337  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:28:01  

Additional Information
 Earth MOID = 1.13352 au 
 Jupiter MOID = 2.26171 au 
 T_jup = 3.485 
[ 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 10.5   n/a MPO502158 IRAS observations used: 15
diameter diameter 49.761 km 0.287 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.577 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Brincat, S. (2012) Posting on CALL site. http://www.minorplanet.info/call.html]
[Stephens, R.D. (2016) Minor Planet Bull. 43, 336-339.]
[Wang, A.; Want, X.-B.; Muinonen, K.; Han, X.L.; Want, Y.-B. (2016) Research in Astron. Astrophys. 16, 180.]
geometric albedo albedo 0.014   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.702   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.34 deg.
U-B UB 0.320   0.052 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.34 deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

585 Bilkis (A906 DF)          Discovered 1906-Feb-16 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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