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215781 (2004 HL73)
Classification: Main-belt Asteroid          SPK-ID: 2215781
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1001741217391142 4.5877e-08  
a 2.965137304865234 3.1525e-08 au
q 2.668107279514475 1.4605e-07 au
i 1.902223868361155 6.0313e-06 deg
node 26.57758983000572 0.000157 deg
peri 246.9127131954244 0.00016024 deg
M 15.93202180634903 3.1458e-05 deg
tp 2458917.965783771598
(2020-Mar-09.46578377)
0.00016275 TDB
period 1864.943332577178
5.11
2.9742e-05
8.143e-08
d
yr
n .1930353559335841 3.0785e-09 deg/d
Q 3.262167330215993 3.4684e-08 au
  Orbit Determination Parameters
   # obs. used (total)      267  
   data-arc span      9570 days (26.20 yr)  
   first obs. used      1993-02-26  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:26:54  

Additional Information
 Earth MOID = 1.65256 au 
 Jupiter MOID = 1.82953 au 
 T_jup = 3.256 
[ 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 16.2   n/a MPO437031  

215781 (2004 HL73)          Discovered 2004-Apr-28 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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