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JPL Small-Body Database Browser
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85157 (1987 SP5)
Classification: Main-belt Asteroid          SPK-ID: 2085157
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2278911277074631 3.8108e-08  
a 2.263098796643285 8.3233e-09 au
q 1.747358659762844 8.3562e-08 au
i 6.190827371744566 4.7807e-06 deg
node 3.897884347453913 3.8703e-05 deg
peri 53.10226565229603 4.0594e-05 deg
M 67.98606980178408 1.1362e-05 deg
tp 2458365.660507878233
(2018-Sep-04.16050788)
3.8789e-05 TDB
period 1243.522642363678
3.40
6.8602e-06
1.878e-08
d
yr
n .289500156841306 1.5971e-09 deg/d
Q 2.778838933523726 1.022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      726  
   data-arc span      11533 days (31.58 yr)  
   first obs. used      1987-09-29  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54758  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:10:27  

Additional Information
 Earth MOID = .766627 au 
 Jupiter MOID = 2.60754 au 
 T_jup = 3.576 
[ 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 16.0   n/a MPO366210  

85157 (1987 SP5)          Discovered 1987-Sep-30 by Jensen, P. at Brorfelde
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1987 SP5 = 1999 HA6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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