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30839 (1991 GH1)
Classification: Main-belt Asteroid          SPK-ID: 2030839
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1363155958343194 5.6211e-08  
a 2.431908072748978 1.8677e-08 au
q 2.10040107479791 1.2917e-07 au
i 3.748921578941845 6.1595e-06 deg
node 73.13021088293712 8.5191e-05 deg
peri 83.93799562989999 8.9985e-05 deg
M 225.4272846930624 3.1754e-05 deg
tp 2457918.313862732488
(2017-Jun-13.81386273)
0.00012631 JED
period 1385.221292135774
3.79
1.5957e-05
4.369e-08
d
yr
n .2598862737988539 2.9938e-09 deg/d
Q 2.763415070700047 2.1223e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1148  
   data-arc span      9005 days (24.65 yr)  
   first obs. used      1991-04-11  
   last obs. used      2015-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4807  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:15:04  

Additional Information
 Earth MOID = 1.11389 au 
 Jupiter MOID = 2.23014 au 
 T_jup = 3.491 
[ 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 13.7 mag n/a MPO358916  

30839 (1991 GH1)          Discovered 1991-Apr-11 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 GH1 = 1968 DA = 1999 LU25 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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