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7096 Napier (1992 VM)
Classification: Mars-crossing Asteroid          SPK-ID: 2007096
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5022042127113828 2.0682e-08  
a 2.7783661168249 9.1917e-09 au
q 1.383058948500869 5.6121e-08 au
i 11.15013087308869 5.2779e-06 deg
node 146.5026460318516 1.5304e-05 deg
peri 257.9817855382195 1.7003e-05 deg
M 67.46012919221396 4.6726e-06 deg
tp 2459079.523324895285
(2020-Aug-18.02332490)
2.2281e-05 TDB
period 1691.54142460296
4.63
8.3942e-06
2.298e-08
d
yr
n .2128236381113158 1.0561e-09 deg/d
Q 4.173673285148931 1.3808e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1358  
   data-arc span      13583 days (37.19 yr)  
   first obs. used      1984-04-01  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49239  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:22:15  

Additional Information
 Earth MOID = .448612 au 
 Jupiter MOID = 1.49215 au 
 T_jup = 3.113 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457412.5 (2016-Jan-25.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5041941488488951 2.2529e-08  
q 1.375684339842488 6.2645e-08 au
tp 2457377.858511156542
(2015-Dec-21.35851116)
2.1407e-05 TDB
node 148.7032567863094 1.5235e-05 deg
peri 254.9627755368604 1.6886e-05 deg
i 11.22570951951618 5.2847e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1358  
   data-arc span      13583 days (37.19 yr)  
   first obs. used      1984-04-01  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49239  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:22:15  

Additional Information
 Jupiter MOID = 1.49215 au 
 T_jup = 3.113 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.075775452365031E-16 -1.409094384902386E-15 -2.01123381561994E-13 1.682255030998914E-14 -8.661113815256889E-14 -1.542336620223302E-14
q -1.409094384902386E-15 3.924360177473296E-15 5.815507733627498E-13 -4.915052581737851E-14 2.502297934232932E-13 4.49607590790915E-14
tp -2.01123381561994E-13 5.815507733627498E-13 4.582683804824868E-10 -2.734172159264409E-11 1.669707607088555E-10 9.74675192914576E-12
node 1.682255030998914E-14 -4.915052581737851E-14 -2.734172159264409E-11 2.320900284831813E-10 -2.341049501796945E-10 -6.450146460128677E-12
peri -8.661113815256889E-14 2.502297934232932E-13 1.669707607088555E-10 -2.341049501796945E-10 2.851337429099037E-10 7.361442707793046E-12
i -1.542336620223302E-14 4.49607590790915E-14 9.74675192914576E-12 -6.450146460128677E-12 7.361442707793046E-12 2.792858133961506E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.16   n/a E2021B10  
diameter diameter 5.59 km 0.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
geometric albedo albedo 0.0428   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

7096 Napier (1992 VM)          Discovered 1992-Nov-03 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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