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469738 (2005 NH55)
Classification: Main-belt Asteroid          SPK-ID: 2469738
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1767541517539237 6.5902e-08  
a 2.371510618644785 2.0714e-08 au
q 1.952336270870803 1.5475e-07 au
i 2.724555371261017 8.5621e-06 deg
node 232.816084610001 0.00019453 deg
peri 52.759209853221 0.00019952 deg
M 91.50467930354533 4.2587e-05 deg
tp 2458861.439779772805
(2020-Jan-12.93977977)
0.00015536 TDB
period 1333.939206287791
3.65
1.7477e-05
4.785e-08
d
yr
n .269877366451985 3.5359e-09 deg/d
Q 2.790684966418767 2.4375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      7105 days (19.45 yr)  
   first obs. used      2001-05-24  
   last obs. used      2020-11-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .66844  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 16:20:11  

Additional Information
 Earth MOID = .935487 au 
 Jupiter MOID = 2.3618 au 
 T_jup = 3.522 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457322.5 (2015-Oct-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1762267706288621 6.5972e-08  
q 1.953889682722523 1.5491e-07 au
tp 2457527.668415358625
(2016-May-19.16841536)
0.00014761 TDB
node 232.8367515664467 0.00019448 deg
peri 52.91266262238944 0.0001995 deg
i 2.724450866875139 8.5641e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      7105 days (19.45 yr)  
   first obs. used      2001-05-24  
   last obs. used      2020-11-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .66844  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 16:20:11  

Additional Information
 Jupiter MOID = 2.3618 au 
 T_jup = 3.522 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.352358577566591E-15 -1.015919108144622E-14 3.483496697164256E-12 1.330717922880364E-13 9.963229679663133E-13 -9.736103152222301E-15
q -1.015919108144622E-14 2.399756403228216E-14 -7.153731271004685E-12 -3.037129666208052E-13 -2.045745298434784E-12 2.302328199748222E-14
tp 3.483496697164256E-12 -7.153731271004685E-12 2.178759668903636E-8 2.971373804259828E-10 6.646694901137921E-9 -1.928607950166065E-11
node 1.330717922880364E-13 -3.037129666208052E-13 2.971373804259828E-10 3.782154147452443E-8 -3.768514596004052E-8 -5.802687758263477E-10
peri 9.963229679663133E-13 -2.045745298434784E-12 6.646694901137921E-9 -3.768514596004052E-8 3.97996524940328E-8 5.73470725534555E-10
i -9.736103152222301E-15 2.302328199748222E-14 -1.928607950166065E-11 -5.802687758263477E-10 5.73470725534555E-10 7.334459230831913E-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 18.4   n/a MPO472614  

469738 (2005 NH55)          Discovered 2005-Jul-10 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-08-22

Alternate Designations
 2005 NH55 = 2009 SA121 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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