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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04589840218062662 7.4421e-08  
a 3.176177704013319 3.3831e-08 AU
q 3.030396222357377 2.4172e-07 AU
i 8.537325372893928 7.3493e-06 deg
node 304.7936025104867 5.089e-05 deg
peri 78.57016672286994 9.1602e-05 deg
M 345.2653314421144 7.5308e-05 deg
tp 2457085.123987697723
(2015-Mar-03.62398770)
0.00043246 JED
period 2067.54807218764
5.66
3.3034e-05
9.044e-08
d
yr
n .1741192888536273 2.782e-09 deg/d
Q 3.321959185669262 3.5384e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      885  
   data-arc span      22216 days (60.82 yr)  
   first obs. used      1953-12-07  
   last obs. used      2014-10-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5286  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:11:22  

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 12.7 mag n/a MPO309213  

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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