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JPL Small-Body Database Browser
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108204 (2001 HX22)
Classification: Main-belt Asteroid          SPK-ID: 2108204
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300157265275522 3.3821e-08  
a 2.25953127546024 8.3597e-09 au
q 1.96575667506955 7.5256e-08 au
i 8.042829270152595 3.4321e-06 deg
node 155.8039350228181 2.7632e-05 deg
peri 111.3612884958122 3.0975e-05 deg
M 198.369656994935 1.3709e-05 deg
tp 2459557.488663799162
(2021-Dec-08.98866380)
4.7645e-05 TDB
period 1240.583390715287
3.40
6.8848e-06
1.885e-08
d
yr
n .2901860549595411 1.6104e-09 deg/d
Q 2.553305875850929 9.4466e-09 au
  Orbit Determination Parameters
   # obs. used (total)      770  
   data-arc span      7833 days (21.45 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49765  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:04:19  

Additional Information
 Earth MOID = .966796 au 
 Jupiter MOID = 2.55237 au 
 T_jup = 3.597 
[ 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 16.0   n/a MPO439728  
rotation period rot_per 2.49 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

108204 (2001 HX22)          Discovered 2001-Apr-26 by Yeung, W. K. Y. at Desert Beaver
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 HX22 = 1998 QP19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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