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136997 (1998 SP72)
Classification: Main-belt Asteroid          SPK-ID: 2136997
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 .1972904572439054 4.2282e-08  
a 2.440756063358816 9.4394e-09 au
q 1.959218183597921 1.0598e-07 au
i 2.269066559514046 3.355e-06 deg
node 70.37787567084911 0.00012321 deg
peri 315.1880791741341 0.00012358 deg
M 241.1645242045676 9.8921e-06 deg
tp 2459460.257265152858
(2021-Sep-02.75726515)
3.9287e-05 TDB
period 1392.787922521958
3.81
8.0797e-06
2.212e-08
d
yr
n .258474383772756 1.4994e-09 deg/d
Q 2.922293943119711 1.1302e-08 au
  Orbit Determination Parameters
   # obs. used (total)      770  
   data-arc span      8883 days (24.32 yr)  
   first obs. used      1996-02-14  
   last obs. used      2020-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57219  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 02:32:01  

Additional Information
 Earth MOID = .964157 au 
 Jupiter MOID = 2.52875 au 
 T_jup = 3.474 
[ 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 MPO280702  

136997 (1998 SP72)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 SP72 = 1998 UR37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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