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4901 O Briain (1988 VJ)
Classification: Main-belt Asteroid          SPK-ID: 2004901
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1908730945619242 5.3111e-08  
a 2.27383757799529 9.2047e-09 AU
q 1.839823162952138 1.2122e-07 AU
i 4.640399616646726 5.7075e-06 deg
node 227.1675567494858 6.4005e-05 deg
peri 94.43318052240889 6.5812e-05 deg
M 279.0427747317206 1.6669e-05 deg
tp 2457282.137642305643
(2015-Sep-16.63764231)
5.8612e-05 JED
period 1252.384217641386
3.43
7.6047e-06
2.082e-08
d
yr
n .2874517220266377 1.7455e-09 deg/d
Q 2.707851993038442 1.0962e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1296  
   data-arc span      23682 days (64.84 yr)  
   first obs. used      1950-08-21  
   last obs. used      2015-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51578  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:50:02  

Additional Information
 Earth MOID = .835295 AU 
 T_jup = 3.582 
[ 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 13.5 mag n/a MPO298997  

4901 Ó Briain           Discovered 1988 Nov. 3 by M. Arai and H. Mori at Yorii.
Dara Ó Briain (b. 1972) is an Irish comedian who incorporates scientific topics into his stand-up routines. He studied mathematics and theoretical physics at UC Dublin. He also presents science- and mathematics-related programs for the general public on British television and he is a co-host on the BBC's Stargazing Live program.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-06-02Last Updated: 2015-06-04

[ show close-approach data ]
Alternate Designations
 1988 VJ = 1950 QS = 1974 SF2 = 1977 KV1 = 1981 UW13 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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