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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731021600565884 6.0379e-08  
a 2.319417665762739 1.8006e-08 AU
q 1.917921457745799 1.4055e-07 AU
i 4.555237787122184 7.077e-06 deg
node 356.3900699253767 9.0062e-05 deg
peri 16.69455823794285 9.2844e-05 deg
M 237.4119315616406 2.5618e-05 deg
tp 2457239.851961002916
(2015-Aug-05.35196100)
9.4304e-05 JED
period 1290.22920399941
3.53
1.5024e-05
4.113e-08
d
yr
n .2790201918264474 3.249e-09 deg/d
Q 2.720913873779679 2.1122e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      705  
   data-arc span      8264 days (22.63 yr)  
   first obs. used      1990-08-22  
   last obs. used      2013-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5811  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Oct-23 04:11:44  

Additional Information
 Earth MOID = .917252 AU 
 T_jup = 3.554 
[ 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 14.7 mag n/a MPO259550  

30815 (1990 QH2)          Discovered 1990-Aug-22 by Holt, H. E. at Palomar (675)
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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