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187822 (1999 UH7)
Classification: Main-belt Asteroid          SPK-ID: 2187822
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2867238542780939 4.7146e-08  
a 2.389232241492 1.0254e-08 au
q 1.704182364445925 1.122e-07 au
i 21.92095732604639 1.1111e-05 deg
node 355.7977787550651 1.1365e-05 deg
peri 102.7875584770079 2.4726e-05 deg
M 240.436380004843 1.9944e-05 deg
tp 2459648.504660333595
(2022-Mar-10.00466033)
7.5968e-05 TDB
period 1348.919326184899
3.69
8.6841e-06
2.378e-08
d
yr
n .2668803041158698 1.7181e-09 deg/d
Q 3.074282118538076 1.3194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      796  
   data-arc span      7152 days (19.58 yr)  
   first obs. used      1999-10-30  
   last obs. used      2019-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52256  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 20:42:11  

Additional Information
 Earth MOID = .850695 au 
 Jupiter MOID = 2.37051 au 
 T_jup = 3.382 
[ 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 15.0   n/a MPO338439  
diameter diameter 5.398 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.6421 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.073   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

187822 (1999 UH7)          Discovered 1999-Oct-30 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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