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91124 (1998 HA118)
Classification: Main-belt Asteroid          SPK-ID: 2091124
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1694734471046501 3.9826e-08  
a 2.796113951918875 1.8876e-08 au
q 2.322246881989777 1.1423e-07 au
i 8.897752261262381 4.4939e-06 deg
node 121.7139580803168 2.7733e-05 deg
peri 72.23640959015668 3.1475e-05 deg
M 275.1686219921729 1.8054e-05 deg
tp 2459402.924809993747
(2021-Jul-07.42480999)
8.845e-05 TDB
period 1707.775294943127
4.68
1.7293e-05
4.735e-08
d
yr
n .2108005667174082 2.1346e-09 deg/d
Q 3.269981021847973 2.2074e-08 au
  Orbit Determination Parameters
   # obs. used (total)      776  
   data-arc span      11672 days (31.96 yr)  
   first obs. used      1988-02-11  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55283  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:23:44  

Additional Information
 Earth MOID = 1.34098 au 
 Jupiter MOID = 1.75588 au 
 T_jup = 3.288 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO309818  

91124 (1998 HA118)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 HA118 = 1988 CZ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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