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187757 (1996 UH4)
Classification: Main-belt Asteroid          SPK-ID: 2187757
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2192691059555686 4.778e-08  
a 2.175721979139425 1.2829e-08 au
q 1.698653365965643 1.071e-07 au
i 3.939683887541256 3.8385e-06 deg
node 46.40782643878956 9.8111e-05 deg
peri 318.673354867378 9.9102e-05 deg
M 202.8620465811798 1.7194e-05 deg
tp 2459712.160766570905
(2022-May-12.66076657)
5.9045e-05 TDB
period 1172.204880857669
3.21
1.0367e-05
2.838e-08
d
yr
n .3071135480485275 2.7162e-09 deg/d
Q 2.652790592313207 1.5642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      319  
   data-arc span      8903 days (24.38 yr)  
   first obs. used      1996-10-29  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54803  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:43  

Additional Information
 Earth MOID = .698017 au 
 Jupiter MOID = 2.80877 au 
 T_jup = 3.650 
[ 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 17.1   n/a MPO348474  
rotation period rot_per 28.996 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

187757 (1996 UH4)          Discovered 1996-Oct-29 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Alternate Designations
 1996 UH4 = 1998 EM4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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