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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731021304323836 5.2527e-08  
a 2.319417679590588 1.8957e-08 AU
q 1.917921537890921 1.2571e-07 AU
i 4.555236326385767 6.1897e-06 deg
node 356.3899339311283 7.9915e-05 deg
peri 16.69467511661279 8.2421e-05 deg
M 237.4119433913519 2.4128e-05 deg
tp 2457239.851922534562
(2015-Aug-05.35192253)
8.9539e-05 JED
period 1290.229215537497
3.53
1.5818e-05
4.331e-08
d
yr
n .2790201893312634 3.4207e-09 deg/d
Q 2.720913821290254 2.2238e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      726  
   data-arc span      8703 days (23.83 yr)  
   first obs. used      1990-08-22  
   last obs. used      2014-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55185  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:03:31  

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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