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27946 (1997 NA)
Classification: Main-belt Asteroid          SPK-ID: 2027946
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1796958529523156 4.8351e-08  
a 2.24693408909083 7.7369e-09 au
q 1.843169351424019 1.0694e-07 au
i 5.691605334867141 5.1341e-06 deg
node 220.7407365478901 3.6573e-05 deg
peri 123.4327969240357 3.8543e-05 deg
M 217.6065475076094 1.484e-05 deg
tp 2459487.099262004125
(2021-Sep-29.59926200)
5.2211e-05 TDB
period 1230.22323888696
3.37
6.3541e-06
1.74e-08
d
yr
n .2926298159720254 1.5114e-09 deg/d
Q 2.650698826757641 9.1272e-09 au
  Orbit Determination Parameters
   # obs. used (total)      852  
   data-arc span      8780 days (24.04 yr)  
   first obs. used      1996-01-15  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:25  

Additional Information
 Earth MOID = .843482 au 
 Jupiter MOID = 2.78054 au 
 T_jup = 3.602 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456614.5 (2013-Nov-18.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1801947928139653 4.8419e-08  
q 1.842000180114434 1.0717e-07 au
tp 2457024.838503493094
(2015-Jan-02.33850349)
4.5224e-05 TDB
node 220.8179690969178 3.6635e-05 deg
peri 123.1118529738691 3.8575e-05 deg
i 5.686301042404939 5.1315e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      852  
   data-arc span      8780 days (24.04 yr)  
   first obs. used      1996-01-15  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 01:13:25  

Additional Information
 Jupiter MOID = 2.78054 au 
 T_jup = 3.602 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.344367856148427E-15 -5.180822915881392E-15 1.157219160700459E-12 1.063094309405755E-14 2.552106746613362E-13 2.350679341214392E-15
q -5.180822915881392E-15 1.148583297738782E-14 -2.477667586736019E-12 -2.293337529155478E-14 -5.460143315814001E-13 -5.044257501912995E-15
tp 1.157219160700459E-12 -2.477667586736019E-12 2.045207452650947E-9 1.284321477298335E-11 5.51385625924342E-10 3.448004343375611E-13
node 1.063094309405755E-14 -2.293337529155478E-14 1.284321477298335E-11 1.342122074061404E-9 -1.331553653994661E-9 -4.754626426784307E-11
peri 2.552106746613362E-13 -5.460143315814001E-13 5.51385625924342E-10 -1.331553653994661E-9 1.488068110333706E-9 4.73365983449678E-11
i 2.350679341214392E-15 -5.044257501912995E-15 3.448004343375611E-13 -4.754626426784307E-11 4.73365983449678E-11 2.633204344449233E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO257059  

27946 (1997 NA)          Discovered 1997-Jul-01 by Spacewatch at Kitt Peak
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 NA = 1996 AG12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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