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JPL Small-Body Database Browser
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172166 (2002 NU56)
Classification: Main-belt Asteroid          SPK-ID: 2172166
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2600913740297437 3.8711e-08  
a 2.557335784009062 2.0072e-08 au
q 1.892194806090713 9.3487e-08 au
i 2.324477035545992 5.1049e-06 deg
node 4.424813286771327 0.00015985 deg
peri 334.3340272114907 0.0001608 deg
M 98.83494125770974 1.7828e-05 deg
tp 2458590.401606486454
(2019-Apr-16.90160649)
7.4022e-05 TDB
period 1493.75736744681
4.09
1.7586e-05
4.815e-08
d
yr
n .2410029954297909 2.8374e-09 deg/d
Q 3.22247676192741 2.5293e-08 au
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      7861 days (21.52 yr)  
   first obs. used      1998-07-21  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51459  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:44:43  

Additional Information
 Earth MOID = .883681 au 
 Jupiter MOID = 2.17799 au 
 T_jup = 3.387 
[ 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 15.5   n/a MPO449894  

172166 (2002 NU56)          Discovered 2002-Jul-01 by Tristram, P. J. at Lake Tekapo
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2002 NU56 = 2000 AF94 = 2003 YQ77 = 2005 EX53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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