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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

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
7.4022e-05 TDB
period 1493.75736744681
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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
2152-Feb-17 17:55 00:15 Psych 0.0276052155274049 0.0275743130933815 0.0276361248420036 2.77932488385394 2.7793247261572 2507109.246656155 14.8615988515393 1685.24637042237 82.3772738171433 24.1093252661055 20559.840310782 T 21 CATAB v2.0f-lin.ifort 2020-Feb-24 16:44:46 2020-Feb-24 16:44

Alternate Designations
 2002 NU56 = 2000 AF94 = 2003 YQ77 = 2005 EX53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Sep-22 12:17 UT
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