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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1909598515867218 5.0138e-08  
a 2.273906891856541 8.4838e-09 au
q 1.839681969265592 1.1538e-07 au
i 4.640633640899353 5.2624e-06 deg
node 227.1600889155949 6.3074e-05 deg
peri 94.3520198661577 6.4594e-05 deg
M 91.56771370397684 1.402e-05 deg
tp 2457281.935546788146
(2015-Sep-16.43554679)
4.8378e-05 JED
period 1252.441483108547
3.43
7.0092e-06
1.919e-08
d
yr
n .2874385788519904 1.6086e-09 deg/d
Q 2.70813181444749 1.0104e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1422  
   data-arc span      23886 days (65.40 yr)  
   first obs. used      1950-08-21  
   last obs. used      2016-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50449  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:09:46  

Additional Information
 Earth MOID = .83378 au 
 Jupiter MOID = 2.60831 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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