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30815 (1990 QH2)
Classification: Main-belt Asteroid          SPK-ID: 2030815
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1728463768578141 4.8737e-08  
a 2.31930220128188 1.2267e-08 au
q 1.918419218951954 1.1185e-07 au
i 4.55529812626413 5.177e-06 deg
node 356.3827291426338 6.8247e-05 deg
peri 16.6420291733534 7.018e-05 deg
M 44.8573117589099 1.5662e-05 deg
tp 2457239.744744621294
(2015-Aug-05.24474462)
5.6131e-05 JED
period 1290.132860555096
3.53
1.0235e-05
2.802e-08
d
yr
n .2790410282589852 2.2138e-09 deg/d
Q 2.720185183611806 1.4387e-08 au
  Orbit Determination Parameters
   # obs. used (total)      951  
   data-arc span      9244 days (25.31 yr)  
   first obs. used      1990-08-22  
   last obs. used      2015-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52388  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:14:56  

Additional Information
 Earth MOID = .917351 au 
 Jupiter MOID = 2.74129 au 
 T_jup = 3.555 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9 mag n/a MPO358916  

30815 (1990 QH2)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

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