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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08475666773638335 4.3983e-08  
a 2.530877590618095 1.6244e-08 AU
q 2.316368839588618 1.1423e-07 AU
i 1.206487585696898 4.9505e-06 deg
node 206.9753874813017 0.00021491 deg
peri 19.20651008481693 0.00021715 deg
M 200.7050097805051 3.2457e-05 deg
tp 2457651.235881450624
(2016-Sep-19.73588145)
0.00013429 JED
period 1470.635812208705
4.03
1.4159e-05
3.877e-08
d
yr
n .2447920804127069 2.3568e-09 deg/d
Q 2.745386341647571 1.7621e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1377  
   data-arc span      14062 days (38.50 yr)  
   first obs. used      1976-05-02  
   last obs. used      2014-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49552  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:03:03  

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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