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7941 (1991 NE1)
Classification: Main-belt Asteroid          SPK-ID: 2007941
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04553139989787646 6.6909e-08  
a 3.175020154073524 3.1064e-08 au
q 3.030457041754585 2.1407e-07 au
i 8.537466611066728 6.5387e-06 deg
node 304.7884442898094 4.6875e-05 deg
peri 78.53084872678257 8.7606e-05 deg
M 54.98766333600697 7.1726e-05 deg
tp 2457084.868077400418
(2015-Mar-03.36807740)
0.00041252 JED
period 2066.417906167768
5.66
3.0326e-05
8.303e-08
d
yr
n .1742145182373252 2.5567e-09 deg/d
Q 3.319583266392463 3.2478e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1013  
   data-arc span      22656 days (62.03 yr)  
   first obs. used      1953-12-07  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52034  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:05:38  

Additional Information
 Earth MOID = 2.04575 au 
 Jupiter MOID = 1.95968 au 
 T_jup = 3.182 
[ 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 12.7 mag n/a MPO309213  

7941 (1991 NE1)          Discovered 1991-Jul-12 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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