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85570 (1998 BU20)
Classification: Main-belt Asteroid          SPK-ID: 2085570
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1118941763583346 3.9054e-08  
a 2.635694651718613 1.5769e-08 au
q 2.340775769532491 1.0704e-07 au
i 6.495712831575582 4.8334e-06 deg
node 120.3161274610851 5.9097e-05 deg
peri 168.0139609534633 6.7082e-05 deg
M 274.9473556856706 3.2465e-05 deg
tp 2459369.755004152527
(2021-Jun-04.25500415)
0.00014139 TDB
period 1562.935550876386
4.28
1.4026e-05
3.84e-08
d
yr
n .2303357933077514 2.067e-09 deg/d
Q 2.930613533904734 1.7533e-08 au
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      8125 days (22.25 yr)  
   first obs. used      1998-01-22  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59318  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:38:04  

Additional Information
 Earth MOID = 1.32491 au 
 Jupiter MOID = 2.22301 au 
 T_jup = 3.380 
[ 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 15.8   n/a MPO432399  

85570 (1998 BU20)          Discovered 1998-Jan-22 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 BU20 = 2003 FY62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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