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30558 Jamesoconnor (2001 OC68)
Classification: Main-belt Asteroid          SPK-ID: 2030558
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2080985845611982 1.0159e-07  
a 2.220571886620307 1.1226e-08 AU
q 1.758474020098232 2.251e-07 AU
i 6.46131456211616 1.0608e-05 deg
node 335.8800332254723 3.9128e-05 deg
peri 24.61536843010058 4.1983e-05 deg
M 285.8368222468372 1.3015e-05 deg
tp 2457049.489774618998
(2015-Jan-26.98977462)
4.4135e-05 JED
period 1208.636436280761
3.31
9.1657e-06
2.509e-08
d
yr
n .2978563190663016 2.2588e-09 deg/d
Q 2.682669753142382 1.3563e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      632  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1991-07-14  
   last obs. used      2013-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55379  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 02:37:09  

Additional Information
 Earth MOID = .755713 AU 
 T_jup = 3.613 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2 mag n/a MPO259549  

30558 Jamesoconnor           Discovered 2001 July 16 by the Lowell Observatory Near-Earth-Object Search at the Anderson Mesa Station.
Irish amateur astronomer James O'Connor (b. 1931) has been a stalwart of the Irish Astronomical Society for sixty years, serving as president, secretary and council member. He has also written a history of the Society covering the years 1937--2006. The name was suggested by J. McConnell.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100923/MPCPages.arcLast Updated: 2010-12-06

[ show close-approach data ]
Alternate Designations
 2001 OC68 = 1991 NM2 = 2000 EV144 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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