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186870 (2004 HM33)
Classification: Main-belt Asteroid          SPK-ID: 2186870
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2236030412314269 3.7697e-08  
a 2.554634302912298 2.1624e-08 au
q 1.983410303546982 9.4653e-08 au
i 5.617337108813638 7.4766e-06 deg
node 115.0510822196833 0.00014858 deg
peri 163.4789289238747 0.0001589 deg
M 344.5141024643231 5.5129e-05 deg
tp 2459264.654247707634
(2021-Feb-19.15424771)
0.00022887 TDB
period 1491.391062193201
4.08
1.8936e-05
5.184e-08
d
yr
n .2413853811558944 3.0649e-09 deg/d
Q 3.125858302277614 2.646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      309  
   data-arc span      5879 days (16.10 yr)  
   first obs. used      2004-04-16  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51461  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:02  

Additional Information
 Earth MOID = .965835 au 
 Jupiter MOID = 2.02231 au 
 T_jup = 3.396 
[ 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 16.47   n/a E2021B55  
rotation period rot_per 4.75 h n/a LCDB (Rev. 2020-October); 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:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

186870 (2004 HM33)          Discovered 2004-Apr-16 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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