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JPL Small-Body Database Browser
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85564 (1998 BU7)
Classification: Main-belt Asteroid          SPK-ID: 2085564
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2741031450794277 4.9211e-08  
a 2.569010740591184 1.3513e-08 au
q 1.864836816852311 1.2974e-07 au
i 13.22325205490916 5.0521e-06 deg
node 79.83402039426322 2.417e-05 deg
peri 303.8688152993355 2.6432e-05 deg
M 197.9877627654603 1.5591e-05 deg
tp 2459677.350299349986
(2022-Apr-07.85029935)
6.9646e-05 TDB
period 1503.998166590636
4.12
1.1867e-05
3.249e-08
d
yr
n .23936199391524 1.8886e-09 deg/d
Q 3.273184664330058 1.7217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      708  
   data-arc span      7791 days (21.33 yr)  
   first obs. used      1997-12-04  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57091  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:50:06  

Additional Information
 Earth MOID = .905282 au 
 Jupiter MOID = 2.26839 au 
 T_jup = 3.341 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO468825  

85564 (1998 BU7)          Discovered 1998-Jan-17 by Osservatorio San Vittore at Bologna
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 BU7 = 2001 QN90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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