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442625 (2012 SG18)
Classification: Main-belt Asteroid          SPK-ID: 2442625
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1803590328570495 1.0899e-07  
a 2.195590065532133 4.3814e-08 au
q 1.799595564762211 2.3672e-07 au
i 3.469151839655439 1.0357e-05 deg
node 312.4387102961535 0.00011933 deg
peri 332.6451531581371 0.00012353 deg
M 202.4253427061293 3.3579e-05 deg
tp 2459520.626741515592
(2021-Nov-02.12674152)
0.00011725 TDB
period 1188.297852975224
3.25
3.557e-05
9.739e-08
d
yr
n .3029543469245889 9.0684e-09 deg/d
Q 2.591584566302054 5.1716e-08 au
  Orbit Determination Parameters
   # obs. used (total)      87  
   data-arc span      3181 days (8.71 yr)  
   first obs. used      2008-05-13  
   last obs. used      2017-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68234  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:26:51  

Additional Information
 Earth MOID = .784055 au 
 Jupiter MOID = 2.56396 au 
 T_jup = 3.645 
[ 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 18.1   n/a MPO349191  

442625 (2012 SG18)          Discovered 2011-Feb-22 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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