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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08681712667818914 4.7021e-08  
a 2.88921432564342 1.4447e-08 au
q 2.638381039533596 1.3421e-07 au
i 1.163695228544855 4.8276e-06 deg
node 328.9955217813397 0.00020301 deg
peri 39.97743435045003 0.00020417 deg
M 264.3878401314361 2.3106e-05 deg
tp 2459476.907614668474
(2021-Sep-19.40761467)
0.00011653 TDB
period 1793.775410119564
4.91
1.3454e-05
3.684e-08
d
yr
n .2006940210959879 1.5053e-09 deg/d
Q 3.140047611753244 1.5701e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1768  
   data-arc span      17070 days (46.74 yr)  
   first obs. used      1972-10-07  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50221  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:25:34  

Additional Information
 Earth MOID = 1.63751 au 
 Jupiter MOID = 2.30803 au 
 T_jup = 3.285 
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Orbital Elements at Epoch 2456354.5 (2013-Mar-03.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08743180347662896 4.6826e-08  
q 2.635633995951824 1.3352e-07 au
tp 2455902.532729484204
(2011-Dec-07.03272948)
0.00010907 TDB
node 329.0823771871393 0.00020319 deg
peri 41.82872444924598 0.00020435 deg
i 1.163308168160556 4.8266e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1768  
   data-arc span      17070 days (46.74 yr)  
   first obs. used      1972-10-07  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50221  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:25:34  

Additional Information
 Jupiter MOID = 2.30803 au 
 T_jup = 3.285 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.192685219607667E-15 -6.22112623159695E-15 -7.624219429501377E-13 1.085100590995355E-14 -1.556869580442526E-13 2.534886443103492E-16
q -6.22112623159695E-15 1.782639601331123E-14 2.380469101079331E-12 -3.204535307958517E-14 4.935838277791902E-13 -6.48826991246068E-16
tp -7.624219429501377E-13 2.380469101079331E-12 1.189653307599427E-8 -1.469032983918835E-11 2.400178013997868E-9 1.645141227803716E-13
node 1.085100590995355E-14 -3.204535307958517E-14 -1.469032983918835E-11 4.128522810923986E-8 -4.127891028712642E-8 2.903083426057278E-10
peri -1.556869580442526E-13 4.935838277791902E-13 2.400178013997868E-9 -4.127891028712642E-8 4.176057005844338E-8 -2.902012267044508E-10
i 2.534886443103492E-16 -6.48826991246068E-16 1.645141227803716E-13 2.903083426057278E-10 -2.902012267044508E-10 2.329595164626061E-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 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-August); 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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