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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2065873335070721 3.6755e-08  
a 2.726284687555169 1.126e-08 au
q 2.163068803571985 1.0448e-07 au
i 16.77675277153851 4.3154e-06 deg
node 117.9787943195071 1.3556e-05 deg
peri 309.6969385135336 1.8248e-05 deg
M 21.15127030280614 1.0106e-05 deg
tp 2458903.897317124704
(2020-Feb-24.39731712)
4.6129e-05 TDB
period 1644.202231697302
4.50
1.0186e-05
2.789e-08
d
yr
n .218951168572721 1.3564e-09 deg/d
Q 3.289500571538352 1.3586e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1154  
   data-arc span      8123 days (22.24 yr)  
   first obs. used      1997-11-07  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50922  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:34:26  

Additional Information
 Earth MOID = 1.2156 au 
 Jupiter MOID = 2.07205 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 14.5   n/a MPO502666  
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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