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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1730235689571529 5.2532e-08  
a 2.31965869455704 1.8987e-08 AU
q 1.918303068462291 1.2573e-07 AU
i 4.555159765200699 6.1897e-06 deg
node 356.3846111724221 7.9912e-05 deg
peri 16.66698604145939 8.242e-05 deg
M 293.2388745477445 2.4516e-05 deg
tp 2457239.807169097755
(2015-Aug-05.30716910)
8.9577e-05 JED
period 1290.430325905794
3.53
1.5843e-05
4.338e-08
d
yr
n .2789767047262351 3.4252e-09 deg/d
Q 2.721014320651789 2.2272e-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 = .918991 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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