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118638 (2000 HR71)
Classification: Main-belt Asteroid          SPK-ID: 2118638
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2791206728198184 4.7183e-08  
a 2.582697766581977 1.3865e-08 au
q 1.861813428283374 1.2094e-07 au
i 11.86746615328276 5.8925e-06 deg
node 22.50957040389781 2.5086e-05 deg
peri 272.7549932845399 2.7015e-05 deg
M 303.7965079297147 9.4436e-06 deg
tp 2459437.184385038450
(2021-Aug-10.68438504)
4.0151e-05 TDB
period 1516.033532352176
4.15
1.2208e-05
3.342e-08
d
yr
n .237461766060971 1.9122e-09 deg/d
Q 3.303582104880581 1.7735e-08 au
  Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      7308 days (20.01 yr)  
   first obs. used      2000-04-25  
   last obs. used      2020-04-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57141  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:58:10  

Additional Information
 Earth MOID = .890481 au 
 Jupiter MOID = 2.09246 au 
 T_jup = 3.339 
[ 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 15.56   n/a E2021B55  

118638 (2000 HR71)          Discovered 2000-Apr-25 by LONEOS at Anderson Mesa
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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