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27988 Menabrea (1997 VA4)
Classification: Main-belt Asteroid          SPK-ID: 2027988
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2131696999996072 5.5191e-08  
a 3.043444053330048 2.4653e-08 AU
q 2.394673997516093 1.67e-07 AU
i 7.492226809845108 6.5088e-06 deg
node 175.8866468694782 4.7469e-05 deg
peri 281.966881286834 5.0006e-05 deg
M 73.71136039305006 1.4982e-05 deg
tp 2456603.419704344956
(2013-Nov-06.91970435)
7.921e-05 JED
period 1939.306311450111
5.31
2.3563e-05
6.451e-08
d
yr
n .1856333875027772 2.2555e-09 deg/d
Q 3.692214109144003 2.9908e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      626  
   data-arc span      6704 days (18.35 yr)  
   first obs. used      1996-09-12  
   last obs. used      2015-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58772  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 14:16:57  

Additional Information
 Earth MOID = 1.42486 AU 
 T_jup = 3.191 
[ 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 14.5 mag n/a MPO250480  

27988 Menabrea           Discovered 1997 Nov. 7 by P. G. Comba at Prescott.
Luigi Federico Menabrea (1809-1896), Piedmontese mathematician and statesman, is best remembered for an article he wrote based on a lecture given in Turin by Charles Babbage. Amplified by Ada Lovelace, this lecture was one of the earliest and clearest conceptualizations of a general-purpose computing engine.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1997 VA4 = 1996 TN52 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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