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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08445139147526 4.3635e-08  
a 2.532538531787341 1.5038e-08 au
q 2.318662128813188 1.1419e-07 au
i 1.206692838416266 4.6319e-06 deg
node 206.9092568364899 0.00020107 deg
peri 18.80836878013334 0.00020305 deg
M 299.0353029058399 3.1444e-05 deg
tp 2457649.792055798013
(2016-Sep-18.29205580)
0.00012948 JED
period 1472.083752809812
4.03
1.3112e-05
3.59e-08
d
yr
n .2445513030850703 2.1782e-09 deg/d
Q 2.746414934761495 1.6308e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1580  
   data-arc span      14474 days (39.63 yr)  
   first obs. used      1976-05-02  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4903  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:01:58  

Additional Information
 Earth MOID = 1.30846 au 
 Jupiter MOID = 2.22795 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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