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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2082755053916188 4.2426e-08  
a 2.220307413293075 7.5762e-09 au
q 1.757871764664702 9.3905e-08 au
i 6.454921913144777 4.7237e-06 deg
node 335.8151694958405 2.4719e-05 deg
peri 24.95620777217544 2.6147e-05 deg
M 280.3412292528536 1.0843e-05 deg
tp 2459467.892480401750
(2021-Sep-10.39248040)
3.7459e-05 TDB
period 1208.420517185529
3.31
6.1851e-06
1.693e-08
d
yr
n .297909539667911 1.5248e-09 deg/d
Q 2.682743061921448 9.1542e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1157  
   data-arc span      10541 days (28.86 yr)  
   first obs. used      1991-07-14  
   last obs. used      2020-05-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5503  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:37:40  

Additional Information
 Earth MOID = .75497 au 
 Jupiter MOID = 2.77638 au 
 T_jup = 3.613 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.18   n/a E2021B10  

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

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Alternate Designations
 2001 OC68 = 1991 NM2 = 2000 EV144 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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