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120701 (1997 HR16)
Classification: Main-belt Asteroid          SPK-ID: 2120701
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03050179037500157 5.0468e-08  
a 2.90919629098625 2.0231e-08 au
q 2.820460595558856 1.4503e-07 au
i 2.557738142852645 4.5276e-06 deg
node 42.67125720803981 0.00010182 deg
peri 332.6893762510032 0.0001259 deg
M 115.0175629416491 7.4171e-05 deg
tp 2458621.445254404062
(2019-May-17.94525440)
0.00037349 TDB
period 1812.416322195018
4.96
1.8905e-05
5.176e-08
d
yr
n .1986298598127851 2.0719e-09 deg/d
Q 2.997931986413645 2.0848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      374  
   data-arc span      9162 days (25.08 yr)  
   first obs. used      1996-02-16  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5526  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:04:01  

Additional Information
 Earth MOID = 1.81939 au 
 Jupiter MOID = 2.13304 au 
 T_jup = 3.282 
[ 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 16.22   n/a MPCxxxxx  

120701 (1997 HR16)          Discovered 1997-Apr-30 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1997 HR16 = 2004 VF55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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