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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08475667186693656 4.3796e-08  
a 2.530877595821697 1.552e-08 AU
q 2.316368833897256 1.1408e-07 AU
i 1.206488661696032 4.8084e-06 deg
node 206.9753312678959 0.00020545 deg
peri 19.20655608581636 0.0002075 deg
M 200.705017395239 3.1653e-05 deg
tp 2457651.235852350594
(2016-Sep-19.73585235)
0.00013145 JED
period 1470.635816744249
4.03
1.3528e-05
3.704e-08
d
yr
n .244792079657751 2.2517e-09 deg/d
Q 2.745386357746138 1.6835e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1437  
   data-arc span      14120 days (38.66 yr)  
   first obs. used      1976-05-02  
   last obs. used      2014-12-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49391  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:19:10  

Additional Information
 Earth MOID = 1.30834 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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