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4927 O'Connell (1982 UP2)
Classification: Main-belt Asteroid          SPK-ID: 2004927
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 62 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08746214833953481 4.7056e-08  
a 2.88630944556922 1.5152e-08 au
q 2.633866620687044 1.3375e-07 au
i 1.16376250045685 4.9156e-06 deg
node 329.0354615503492 0.0002051 deg
peri 40.51121199531273 0.0002063 deg
M 183.4510826687245 2.3112e-05 deg
tp 2459478.865603608651
(2021-Sep-21.36560361)
0.0001173 TDB
period 1791.070837924066
4.90
1.4104e-05
3.861e-08
d
yr
n .2009970752565301 1.5828e-09 deg/d
Q 3.138752270451396 1.6478e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1708  
   data-arc span      17017 days (46.59 yr)  
   first obs. used      1972-10-07  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48244  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:46:21  

Additional Information
 Earth MOID = 1.63232 au 
 Jupiter MOID = 2.31076 au 
 T_jup = 3.286 
[ 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 13.2   n/a MPO395045  
diameter diameter 7.040 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.78 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
geometric albedo albedo 0.205   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4927 O'Connell (1982 UP2)          Discovered 1982-Oct-21 by Vavrova, Z. at Klet
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 UP2 = 1972 TX = 1987 YC4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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