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21264 (1996 HT16)
Classification: Main-belt Asteroid          SPK-ID: 2021264
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05754873871942282 3.6504e-08  
a 2.926471639818085 1.4576e-08 au
q 2.758056888048394 1.0405e-07 au
i 1.727665151040943 3.9248e-06 deg
node 181.5139656329692 0.00011803 deg
peri 217.3589447061445 0.00012303 deg
M 153.7845328950632 3.489e-05 deg
tp 2458419.366859597471
(2018-Oct-27.86685960)
0.0001763 TDB
period 1828.58396258092
5.01
1.3662e-05
3.74e-08
d
yr
n .1968736505223883 1.4709e-09 deg/d
Q 3.094886391587778 1.5415e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1345  
   data-arc span      9228 days (25.26 yr)  
   first obs. used      1995-03-07  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52448  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:58:01  

Additional Information
 Earth MOID = 1.76443 au 
 Jupiter MOID = 2.16002 au 
 T_jup = 3.275 
[ 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 14.42   n/a E2021B10  

21264 (1996 HT16)          Discovered 1996-Apr-18 by Elst, E. W. at La Silla
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 HT16 = 1998 SJ49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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