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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .045898430022372 7.7629e-08  
a 3.17617773408365 4.1018e-08 AU
q 3.030396162617196 2.4645e-07 AU
i 8.537322729423835 7.7162e-06 deg
node 304.7936215464043 5.4227e-05 deg
peri 78.5701925687984 9.9004e-05 deg
M 345.2652777485205 8.5448e-05 deg
tp 2457085.124297271951
(2015-Mar-03.62429727)
0.00049114 JED
period 2067.548101549278
5.66
4.0051e-05
1.097e-07
d
yr
n .1741192863809266 3.3729e-09 deg/d
Q 3.321959305550104 4.29e-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 = 2.04741 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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