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120581 (1995 SN7)
Classification: Main-belt Asteroid          SPK-ID: 2120581
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02635448369461018 7.5432e-08  
a 2.651426872718884 2.2168e-08 au
q 2.581549886434363 2.0796e-07 au
i .4469857735418692 5.8182e-06 deg
node 307.7567037213373 0.00084504 deg
peri 277.0530467770218 0.00085573 deg
M 24.23426194583711 0.00013938 deg
tp 2458894.343839018291
(2020-Feb-14.84383902)
0.00061027 TDB
period 1576.949941319742
4.32
1.9777e-05
5.415e-08
d
yr
n .2282887938083296 2.863e-09 deg/d
Q 2.721303859003405 2.2752e-08 au
  Orbit Determination Parameters
   # obs. used (total)      310  
   data-arc span      8546 days (23.40 yr)  
   first obs. used      1995-09-17  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55482  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:58:47  

Additional Information
 Earth MOID = 1.57146 au 
 Jupiter MOID = 2.24461 au 
 T_jup = 3.390 
[ 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 16.5   n/a MPO469250  

120581 (1995 SN7)          Discovered 1995-Sep-17 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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