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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08472137034588809 4.4115e-08  
a 2.530973055571962 1.7052e-08 AU
q 2.316545549995385 1.1431e-07 AU
i 1.206427573978082 5.0253e-06 deg
node 206.9746221878868 0.00022393 deg
peri 19.2730283024053 0.00022634 deg
M 151.6706202098675 3.3202e-05 deg
tp 2456180.875371697746
(2012-Sep-10.37537170)
0.00013483 JED
period 1470.719021786521
4.03
1.4863e-05
4.069e-08
d
yr
n .2447782306933778 2.4738e-09 deg/d
Q 2.745400561148537 1.8497e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1339  
   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      .49685  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:51:03  

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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