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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2063529568559689 3.7743e-08  
a 2.725477387863366 1.1662e-08 au
q 2.163067070033678 1.0652e-07 au
i 16.77652201352191 4.9747e-06 deg
node 117.9816715053161 1.3697e-05 deg
peri 309.7348995998735 1.8602e-05 deg
M 293.511616264383 1.0936e-05 deg
tp 2458904.032764075700
(2020-Feb-24.53276408)
5.0154e-05 TDB
period 1643.471971010126
4.50
1.0548e-05
2.888e-08
d
yr
n .2190484573818034 1.4059e-09 deg/d
Q 3.287887705693054 1.4069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      983  
   data-arc span      8029 days (21.98 yr)  
   first obs. used      1997-11-07  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52263  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:12:21  

Additional Information
 Earth MOID = 1.21545 au 
 Jupiter MOID = 2.07354 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 14.4   n/a MPO417413  
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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