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85561 (1998 BF2)
Classification: Main-belt Asteroid          SPK-ID: 2085561
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2066702411404123 3.1156e-08  
a 2.726302700611359 9.8507e-09 au
q 2.162857064054252 8.7241e-08 au
i 16.77668300719924 3.9721e-06 deg
node 117.9784916153205 1.3009e-05 deg
peri 309.673045776429 1.7005e-05 deg
M 64.95287150322582 9.8437e-06 deg
tp 2458903.842459139347
(2020-Feb-24.34245914)
4.4648e-05 TDB
period 1644.218527036658
4.50
8.9113e-06
2.44e-08
d
yr
n .2189489986156651 1.1867e-09 deg/d
Q 3.289748337168466 1.1887e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1372  
   data-arc span      8538 days (23.38 yr)  
   first obs. used      1997-11-07  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50819  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:07:00  

Additional Information
 Earth MOID = 1.21505 au 
 Jupiter MOID = 2.07231 au 
 T_jup = 3.265 
[ 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 14.50   n/a MPCxxxxx  
diameter diameter 3.718 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.168   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85561 (1998 BF2)          Discovered 1998-Jan-20 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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