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218601 (2005 NR55)
Classification: Main-belt Asteroid          SPK-ID: 2218601
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.


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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 .20909077546944 3.6955e-08  
a 2.625397449596631 1.9465e-08 au
q 2.076451060944981 9.9301e-08 au
i 16.69326071528506 7.6947e-06 deg
node 198.3993076916895 1.3609e-05 deg
peri 75.30084229327613 2.3821e-05 deg
M 203.4253896080543 2.1223e-05 deg
tp 2459676.287033098062
(2022-Apr-06.78703310)
9.5645e-05 TDB
period 1553.785325132235
4.25
1.728e-05
4.731e-08
d
yr
n .2316922384174031 2.5767e-09 deg/d
Q 3.17434383824828 2.3535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      14835 days (40.62 yr)  
   first obs. used      1979-06-16  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59768  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:59:17  

Additional Information
 Earth MOID = 1.1329 au 
 Jupiter MOID = 2.09804 au 
 T_jup = 3.313 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457475.5 (2016-Mar-28.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2100576049124545 3.6763e-08  
q 2.07258421786231 9.8785e-08 au
tp 2458122.238522072350
(2018-Jan-03.73852207)
8.6659e-05 TDB
node 198.4279099343105 1.3611e-05 deg
peri 75.31434514451627 2.3797e-05 deg
i 16.69570646456236 7.6968e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      363  
   data-arc span      14835 days (40.62 yr)  
   first obs. used      1979-06-16  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59768  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 03:59:17  

Additional Information
 Jupiter MOID = 2.09804 au 
 T_jup = 3.313 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.351490102430742E-15 -3.587956258535788E-15 -7.982612473727886E-13 -4.658467392419116E-15 -2.195909583596869E-13 3.988884837787891E-15
q -3.587956258535788E-15 9.758490737272612E-15 2.658729220706824E-12 1.389433242456003E-14 6.765496931220225E-13 -9.891958785798005E-15
tp -7.982612473727886E-13 2.658729220706824E-12 7.509842866684937E-9 1.315691886923243E-11 1.689116302789565E-9 -1.391099658282464E-11
node -4.658467392419116E-15 1.389433242456003E-14 1.315691886923243E-11 1.852692698035294E-10 -1.739810305583426E-10 -6.68459403999477E-13
peri -2.195909583596869E-13 6.765496931220225E-13 1.689116302789565E-9 -1.739810305583426E-10 5.662874294744057E-10 -2.747565256434985E-12
i 3.988884837787891E-15 -9.891958785798005E-15 -1.391099658282464E-11 -6.68459403999477E-13 -2.747565256434985E-12 5.92403558573632E-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 16.2   n/a MPO459970  

218601 (2005 NR55)          Discovered 2005-Jul-11 by Lowe, A. at Mayhill
Reference: 20090904/Numbers.arcLast Updated: 2009-09-08

[ show close-approach data ]
Alternate Designations
 2005 NR55 = 2001 QS258 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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