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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2192690977622049 4.4903e-08  
a 2.175721977871854 1.2616e-08 au
q 1.698653382802493 1.0166e-07 au
i 3.939683635604479 3.8341e-06 deg
node 46.40789731441592 8.2834e-05 deg
peri 318.6732866521808 8.3851e-05 deg
M 202.8620451445353 1.6909e-05 deg
tp 2459712.160770801661
(2022-May-12.66077080)
5.8302e-05 TDB
period 1172.204879833283
3.21
1.0196e-05
2.792e-08
d
yr
n .3071135483169129 2.6713e-09 deg/d
Q 2.652790572941216 1.5383e-08 au
  Orbit Determination Parameters
   # obs. used (total)      335  
   data-arc span      8939 days (24.47 yr)  
   first obs. used      1996-10-29  
   last obs. used      2021-04-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54646  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:15:15  

Additional Information
 Earth MOID = .698017 au 
 Jupiter MOID = 2.80877 au 
 T_jup = 3.650 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457520.5 (2016-May-12.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2197144748824125 4.515e-08  
q 1.69766472665501 1.0231e-07 au
tp 2457366.215672186125
(2015-Dec-09.71567219)
4.4754e-05 TDB
node 46.42888583374393 8.2854e-05 deg
peri 318.4111225873538 8.3856e-05 deg
i 3.940460400918548 3.8336e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      335  
   data-arc span      8939 days (24.47 yr)  
   first obs. used      1996-10-29  
   last obs. used      2021-04-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54646  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:15:15  

Additional Information
 Jupiter MOID = 2.80877 au 
 T_jup = 3.650 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.038520957706614E-15 -4.600532507631726E-15 -1.108257978190466E-12 2.144568907668777E-14 -3.402429019515652E-13 -2.102463674381647E-15
q -4.600532507631726E-15 1.046691933038174E-14 2.643265303925233E-12 -4.797364433551979E-14 8.08393889925272E-13 5.083890989565567E-15
tp -1.108257978190466E-12 2.643265303925233E-12 2.002907683139749E-9 -1.52712756551269E-11 6.167176243899808E-10 3.459927284628045E-12
node 2.144568907668777E-14 -4.797364433551979E-14 -1.52712756551269E-11 6.864826352918458E-9 -6.852516076591694E-9 -3.375331454063675E-11
peri -3.402429019515652E-13 8.08393889925272E-13 6.167176243899808E-10 -6.852516076591694E-9 7.031785300660248E-9 3.468296289990354E-11
i -2.102463674381647E-15 5.083890989565567E-15 3.459927284628045E-12 -3.375331454063675E-11 3.468296289990354E-11 1.469671587399476E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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

Alternate Designations
 1996 UH4 = 1998 EM4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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