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120819 (1998 HA87)
Classification: Main-belt Asteroid          SPK-ID: 2120819
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09607404284364024 5.3169e-08  
a 2.657458260094482 1.6504e-08 au
q 2.402145501358979 1.435e-07 au
i 2.248564367537749 5.0814e-06 deg
node 288.4678065422909 0.00014985 deg
peri 296.7363875882397 0.00015349 deg
M 75.31852474284338 3.5859e-05 deg
tp 2458869.447090629383
(2020-Jan-20.94709063)
0.00015662 TDB
period 1582.333798761056
4.33
1.4741e-05
4.036e-08
d
yr
n .2275120459929976 2.1194e-09 deg/d
Q 2.912771018829984 1.809e-08 au
  Orbit Determination Parameters
   # obs. used (total)      448  
   data-arc span      8650 days (23.68 yr)  
   first obs. used      1995-08-22  
   last obs. used      2019-04-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:17  

Additional Information
 Earth MOID = 1.39255 au 
 Jupiter MOID = 2.07372 au 
 T_jup = 3.380 
[ 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 16.0   n/a MPO469253  

120819 (1998 HA87)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 HA87 = 1995 QJ15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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