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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 
[ show covariance matrix ]

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1938-Jul-25 03:50 < 00:01 Europ 0.00960802291940996 0.00959710265506201 0.00961896523840396 6.70206179608432 6.7020616310291 2429104.659551688 0.710584036286691 915.214085210726 87.5276836449675 53.8118983746042 13281.116105152 T 12 CATAB v2.0f-lin.ifort 2020-Feb-25 03:59:33 2020-Feb-25 03:59

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