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447172 (2005 NQ76)
Classification: Mars-crossing Asteroid          SPK-ID: 2447172
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2336634334231589 7.6466e-08  
a 2.170704336803096 1.0536e-08 au
q 1.663490108519144 1.616e-07 au
i 5.105476044400854 7.332e-06 deg
node 145.6798747896237 9.3734e-05 deg
peri 172.2488602071503 9.6767e-05 deg
M 285.3644649991285 2.4193e-05 deg
tp 2459442.682404773104
(2021-Aug-16.18240477)
7.9528e-05 TDB
period 1168.152217536852
3.20
8.5048e-06
2.328e-08
d
yr
n .3081790151964017 2.2437e-09 deg/d
Q 2.677918565087049 1.2998e-08 au
  Orbit Determination Parameters
   # obs. used (total)      79  
   data-arc span      5871 days (16.07 yr)  
   first obs. used      2002-10-04  
   last obs. used      2018-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64083  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:53:51  

Additional Information
 Earth MOID = .648503 au 
 Jupiter MOID = 2.63337 au 
 T_jup = 3.648 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457038.5 (2015-Jan-16.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2341819869058653 7.6551e-08  
q 1.662518514363648 1.6191e-07 au
tp 2457105.606612246286
(2015-Mar-24.10661225)
7.0427e-05 TDB
node 145.7166865201823 9.3691e-05 deg
peri 172.186835730363 9.6699e-05 deg
i 5.106504808107952 7.3343e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      79  
   data-arc span      5871 days (16.07 yr)  
   first obs. used      2002-10-04  
   last obs. used      2018-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64083  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:53:51  

Additional Information
 Jupiter MOID = 2.63337 au 
 T_jup = 3.648 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.860116114974144E-15 -1.238404899333795E-14 1.406764640316653E-12 -4.359406328121359E-14 1.410022282511736E-13 -1.441032154316455E-14
q -1.238404899333795E-14 2.6215362711871E-14 -2.817422259529303E-12 9.806075265211045E-14 -2.500041333348725E-13 3.01705844219186E-14
tp 1.406764640316653E-12 -2.817422259529303E-12 4.959999452418765E-9 7.836549225342209E-11 1.720595350443997E-9 -1.593473383376569E-11
node -4.359406328121359E-14 9.806075265211045E-14 7.836549225342209E-11 8.778045942162836E-9 -8.708765175302898E-9 3.071932018825636E-10
peri 1.410022282511736E-13 -2.500041333348725E-13 1.720595350443997E-9 -8.708765175302898E-9 9.35074805730649E-9 -3.107684792883845E-10
i -1.441032154316455E-14 3.01705844219186E-14 -1.593473383376569E-11 3.071932018825636E-10 -3.107684792883845E-10 5.379212585067197E-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 18.6   n/a MPO460661  

447172 (2005 NQ76)          Discovered 2005-Jul-10 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-10-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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