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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08475667285359302 4.3666e-08  
a 2.530877596034372 1.5298e-08 AU
q 2.316368831594799 1.1391e-07 AU
i 1.206487692061743 4.6956e-06 deg
node 206.9753637892144 0.00020254 deg
peri 19.20652313468188 0.00020454 deg
M 200.705017719139 3.1396e-05 deg
tp 2457651.235851109454
(2016-Sep-19.73585111)
0.00013054 JED
period 1470.63581692962
4.03
1.3334e-05
3.651e-08
d
yr
n .2447920796268954 2.2195e-09 deg/d
Q 2.745386360473945 1.6594e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1541  
   data-arc span      14208 days (38.90 yr)  
   first obs. used      1976-05-02  
   last obs. used      2015-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49079  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:26:48  

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
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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