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72820 (2001 HR1)
Classification: Main-belt Asteroid          SPK-ID: 2072820
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1223920565308966 3.859e-08  
a 2.862195998609909 1.4438e-08 au
q 2.511885944145539 1.093e-07 au
i 3.669587916486794 4.84e-06 deg
node 31.01388093266763 7.1375e-05 deg
peri 86.27066856728786 7.5237e-05 deg
M 100.8582042540554 2.2052e-05 deg
tp 2458704.985676478126
(2019-Aug-09.48567648)
0.00010835 TDB
period 1768.672739983887
4.84
1.3382e-05
3.664e-08
d
yr
n .2035424597561671 1.5401e-09 deg/d
Q 3.212506053074279 1.6205e-08 au
  Orbit Determination Parameters
   # obs. used (total)      946  
   data-arc span      9308 days (25.48 yr)  
   first obs. used      1994-11-27  
   last obs. used      2020-05-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53641  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:04:14  

Additional Information
 Earth MOID = 1.53133 au 
 Jupiter MOID = 1.87458 au 
 T_jup = 3.287 
[ 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 15.04   n/a E2021B10  

72820 (2001 HR1)          Discovered 2001-Apr-17 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HR1 = 1994 WX11 = 1998 QM102 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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