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
JPL Small-Body Database Browser
Search: [ help ]  
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455953.5 (2012-Jan-27.0) TDB
Reference: JPL 54 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127948856320973 2.708e-08  
q 2.11959125149181 6.5416e-08 au
tp 2455983.687983320482
(2012-Feb-26.18798332)
5.2811e-05 TDB
node 180.3178127297136 2.3648e-05 deg
peri 329.0255672809685 2.7346e-05 deg
i 7.565138794827166 3.3208e-06 deg
  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
 Jupiter MOID = 2.26171 au 
 T_jup = 3.485 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.333048544655017E-16 -1.766651810769751E-15 2.312931892882844E-13 -1.349978570656608E-16 5.461484249594021E-14 -5.388780540394267E-17
q -1.766651810769751E-15 4.279220959359521E-15 -6.111947460812851E-13 -3.271611148122937E-16 -1.456143107010652E-13 1.74380495341419E-16
tp 2.312931892882844E-13 -6.111947460812851E-13 2.788970521702618E-9 -1.578188038171E-12 7.343425539753653E-10 -3.206619037631313E-13
node -1.349978570656608E-16 -3.271611148122937E-16 -1.578188038171E-12 5.59228254604737E-10 -5.545347432780192E-10 1.309153353917266E-11
peri 5.461484249594021E-14 -1.456143107010652E-13 7.343425539753653E-10 -5.545347432780192E-10 7.477795857728685E-10 -1.308701936173482E-11
i -5.388780540394267E-17 1.74380495341419E-16 -3.206619037631313E-13 1.309153353917266E-11 -1.308701936173482E-11 1.10275450048705E-11

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. 2020-October); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-19 03:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin