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JPL Small-Body Database Browser
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80021 (1999 HR5)
Classification: Main-belt Asteroid          SPK-ID: 2080021
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03104727148507302 4.6639e-08  
a 3.02805486107906 2.0309e-08 au
q 2.934042019735443 1.404e-07 au
i 8.551729497969712 5.4687e-06 deg
node 32.12361079594227 2.8881e-05 deg
peri 342.4009084856867 8.0529e-05 deg
M 121.6640318300521 7.4749e-05 deg
tp 2457950.065244394191
(2017-Jul-15.56524439)
0.00039911 TDB
period 1924.61575122856
5.27
1.9363e-05
5.301e-08
d
yr
n .1870503240816758 1.8818e-09 deg/d
Q 3.122067702422676 2.094e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1042  
   data-arc span      7325 days (20.05 yr)  
   first obs. used      1999-04-12  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54177  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:25:13  

Additional Information
 Earth MOID = 1.93591 au 
 Jupiter MOID = 2.02327 au 
 T_jup = 3.226 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO280278  

80021 (1999 HR5)          Discovered 1999-Apr-17 by Spacewatch at Kitt Peak
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1999 HR5 = 1999 HS10 = 2001 SO37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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