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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04608327002074489 7.763e-08  
a 3.176812092147427 4.0963e-08 AU
q 3.03041420269983 2.4651e-07 AU
i 8.5373656074477 7.716e-06 deg
node 304.7942853895207 5.4222e-05 deg
peri 78.49224426870833 9.8702e-05 deg
M 310.5297273067906 8.4936e-05 deg
tp 2457084.702256067142
(2015-Mar-03.20225607)
0.00048927 JED
period 2068.167540103636
5.66
4.0001e-05
1.095e-07
d
yr
n .1740671357708091 3.3667e-09 deg/d
Q 3.323209981595025 4.285e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      833  
   data-arc span      22106 days (60.52 yr)  
   first obs. used      1953-12-07  
   last obs. used      2014-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53289  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:18:24  

Additional Information
 Earth MOID = 2.04607 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 12.6 mag n/a MPO250288  

7941 (1991 NE1)          Discovered 1991-Jul-12 by Holt, H. E. at Palomar (675)
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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