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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08627859879819758 2.4779e-08  
a 2.890850029246565 1.2909e-08 au
q 2.641431539387443 7.3769e-08 au
i 1.163930257683169 7.3021e-07 deg
node 328.9801470702625 5.3652e-05 deg
peri 39.50159600481744 5.697e-05 deg
M 304.9277506969277 1.3406e-05 deg
tp 2459475.142082680829
(2021-Sep-17.64208268)
6.7323e-05 TDB
period 1795.298921258742
4.92
1.2025e-05
3.292e-08
d
yr
n .2005237098608583 1.3431e-09 deg/d
Q 3.140268519105687 1.4022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1862  
   data-arc span      17510 days (47.94 yr)  
   first obs. used      1972-10-07  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49578  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:57:10  

Additional Information
 Earth MOID = 1.63887 au 
 Jupiter MOID = 2.30369 au 
 T_jup = 3.285 
[ 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 13.23   n/a E2021B10  
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. 2020-October); 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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