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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08475667183930435 4.3793e-08  
a 2.53087759575089 1.5512e-08 AU
q 2.316368833902384 1.1408e-07 AU
i 1.206488630206527 4.8057e-06 deg
node 206.9753326407294 0.00020534 deg
peri 19.20655481539242 0.00020738 deg
M 200.7050173239118 3.1643e-05 deg
tp 2457651.235852614664
(2016-Sep-19.73585261)
0.00013142 JED
period 1470.635816682533
4.03
1.3521e-05
3.702e-08
d
yr
n .244792079668024 2.2505e-09 deg/d
Q 2.745386357599396 1.6827e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1452  
   data-arc span      14143 days (38.72 yr)  
   first obs. used      1976-05-02  
   last obs. used      2015-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49142  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:18:26  

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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