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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1909568340448355 5.0173e-08  
a 2.274168973287307 8.5249e-09 au
q 1.839900866065369 1.1549e-07 au
i 4.640247118286768 5.2691e-06 deg
node 227.1603593868742 6.3232e-05 deg
peri 94.38905318543875 6.4755e-05 deg
M 34.05133026536497 1.4029e-05 deg
tp 2457282.014800478082
(2015-Sep-16.51480048)
4.8667e-05 JED
period 1252.658016455708
3.43
7.0436e-06
1.928e-08
d
yr
n .2873888924756896 1.616e-09 deg/d
Q 2.708437080509245 1.0153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1415  
   data-arc span      23861 days (65.33 yr)  
   first obs. used      1950-08-21  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50542  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:54:12  

Additional Information
 Earth MOID = .832628 au 
 Jupiter MOID = 2.60701 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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