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187394 (2005 UG501)
Classification: Main-belt Asteroid          SPK-ID: 2187394
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08508284771208117 4.8305e-08  
a 2.729904515146504 2.0156e-08 au
q 2.497636465015772 1.3328e-07 au
i 15.67405960161459 4.6871e-06 deg
node 87.34738031688637 1.786e-05 deg
peri 283.4868076446248 3.1924e-05 deg
M 158.7226507771856 2.8691e-05 deg
tp 2458474.133143903779
(2018-Dec-21.63314390)
0.00012854 TDB
period 1647.47795550442
4.51
1.8246e-05
4.995e-08
d
yr
n .2185158221979221 2.4201e-09 deg/d
Q 2.962172565277237 2.1871e-08 au
  Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      8019 days (21.95 yr)  
   first obs. used      1999-05-17  
   last obs. used      2021-04-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59839  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:14:59  

Additional Information
 Earth MOID = 1.55344 au 
 Jupiter MOID = 2.46609 au 
 T_jup = 3.296 
[ 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 15.69   n/a MPCxxxxx  
rotation period rot_per 3.21304 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.]

187394 (2005 UG501)          Discovered 2005-Oct-27 by CSS at Catalina
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 2005 UG501 = 2001 YC158 = 2003 GD10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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