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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1796958509013084 4.8029e-08  
a 2.246934088347321 7.5752e-09 au
q 1.843169355422594 1.0635e-07 au
i 5.691603308075329 4.8844e-06 deg
node 220.7407265062724 3.5721e-05 deg
peri 123.4328084088174 3.7567e-05 deg
M 217.6065468789613 1.4738e-05 deg
tp 2459487.099263910873
(2021-Sep-29.59926391)
5.1929e-05 TDB
period 1230.22323827634
3.37
6.2213e-06
1.703e-08
d
yr
n .2926298161172718 1.4798e-09 deg/d
Q 2.650698821272049 8.9365e-09 au
  Orbit Determination Parameters
   # obs. used (total)      906  
   data-arc span      8870 days (24.28 yr)  
   first obs. used      1996-01-15  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54374  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:24:43  

Additional Information
 Earth MOID = .843482 au 
 Jupiter MOID = 2.78054 au 
 T_jup = 3.602 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456908.5 (2014-Sep-08.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1801117050979174 4.8067e-08  
q 1.84252487452232 1.0651e-07 au
tp 2457024.733633189704
(2015-Jan-02.23363319)
4.4583e-05 TDB
node 220.8144676596651 3.5787e-05 deg
peri 123.0543339444364 3.7611e-05 deg
i 5.685585827646068 4.8813e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      906  
   data-arc span      8870 days (24.28 yr)  
   first obs. used      1996-01-15  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54374  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:24:43  

Additional Information
 Jupiter MOID = 2.78054 au 
 T_jup = 3.602 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.310417215731732E-15 -5.111447819408498E-15 1.202616127682952E-12 1.122669745506523E-14 2.756113203653982E-13 2.41046507015917E-15
q -5.111447819408498E-15 1.134401383541831E-14 -2.569712970177278E-12 -2.422582530833355E-14 -5.873536304397057E-13 -5.225067930670916E-15
tp 1.202616127682952E-12 -2.569712970177278E-12 1.987683945189785E-9 1.252413969632809E-11 5.238503392337268E-10 6.213710510981913E-13
node 1.122669745506523E-14 -2.422582530833355E-14 1.252413969632809E-11 1.28074250035453E-9 -1.270742277786107E-9 -5.943496938125866E-11
peri 2.756113203653982E-13 -5.873536304397057E-13 5.238503392337268E-10 -1.270742277786107E-9 1.414567800260556E-9 5.925962229735137E-11
i 2.41046507015917E-15 -5.225067930670916E-15 6.213710510981913E-13 -5.943496938125866E-11 5.925962229735137E-11 2.382712036463342E-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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