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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08475666635546378 4.4126e-08  
a 2.530877588782098 1.68e-08 AU
q 2.316368841403173 1.1434e-07 AU
i 1.206486857937713 5.0179e-06 deg
node 206.9754350075962 0.00022174 deg
peri 19.2064661517583 0.00022411 deg
M 200.7050070975929 3.308e-05 deg
tp 2457651.235891702484
(2016-Sep-19.73589170)
0.0001365 JED
period 1470.635810608421
4.03
1.4643e-05
4.009e-08
d
yr
n .2447920806790794 2.4373e-09 deg/d
Q 2.745386336161023 1.8224e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1351  
   data-arc span      14003 days (38.34 yr)  
   first obs. used      1976-05-02  
   last obs. used      2014-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .496  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:50:47  

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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