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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02699414050498935 5.3388e-08  
a 2.653092396779904 1.8434e-08 au
q 2.581474447848508 1.4246e-07 au
i .4467098695824069 5.1045e-06 deg
node 307.7704154099783 0.00072556 deg
peri 277.6567959845984 0.00073219 deg
M 69.21999451345378 9.7542e-05 deg
tp 2458897.001849285780
(2020-Feb-17.50184929)
0.0004285 TDB
period 1578.436043300802
4.32
1.6451e-05
4.504e-08
d
yr
n .228073859265893 2.377e-09 deg/d
Q 2.7247103457113 1.8932e-08 au
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      9100 days (24.91 yr)  
   first obs. used      1995-09-17  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54497  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:07:12  

Additional Information
 Earth MOID = 1.56995 au 
 Jupiter MOID = 2.24059 au 
 T_jup = 3.389 
[ 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 16.56   n/a E2021B55  

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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