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6957 (1988 HA)
Classification: Main-belt Asteroid          SPK-ID: 2006957
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08472132357008094 4.6389e-08  
a 2.530973039031083 1.6811e-08 AU
q 2.316545653244179 1.1906e-07 AU
i 1.206428404725913 5.24e-06 deg
node 206.9745858151078 0.00023562 deg
peri 19.27303751183416 0.00023818 deg
M 151.670657043666 3.5066e-05 deg
tp 2456180.875227293730
(2012-Sep-10.37522729)
0.00014234 JED
period 1470.719007368953
4.03
1.4653e-05
4.012e-08
d
yr
n .2447782330929571 2.4388e-09 deg/d
Q 2.745400424817986 1.8235e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1338  
   data-arc span      13730 days (37.59 yr)  
   first obs. used      1976-05-02  
   last obs. used      2013-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52559  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Dec-19 22:58:56  

Additional Information
 Earth MOID = 1.30713 AU 
 T_jup = 3.445 
[ 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 13.5 mag n/a MPO279588  

6957 (1988 HA)          Discovered 1988-Apr-16 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1988 HA = 1976 JJ1 = 1986 WA7 = 1993 SS 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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