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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090443635808501 3.2907e-08  
a 2.625290819737162 1.8761e-08 au
q 2.076488571110559 9.0859e-08 au
i 16.69410506554623 6.8683e-06 deg
node 198.3886985008602 1.2984e-05 deg
peri 75.34199432685024 2.2813e-05 deg
M 249.7185111204627 2.1335e-05 deg
tp 2459676.453666460512
(2022-Apr-06.95366646)
9.514e-05 TDB
period 1553.690666191006
4.25
1.6655e-05
4.56e-08
d
yr
n .2317063543173418 2.4838e-09 deg/d
Q 3.174093068363765 2.2683e-08 au
  Orbit Determination Parameters
   # obs. used (total)      446  
   data-arc span      15293 days (41.87 yr)  
   first obs. used      1979-06-16  
   last obs. used      2021-04-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55939  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:43:22  

Additional Information
 Earth MOID = 1.13147 au 
 Jupiter MOID = 2.09745 au 
 T_jup = 3.313 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.19   n/a MPCxxxxx  

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

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