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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457388.5 (2016-Jan-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2622009896519126 3.8953e-08  
q 1.885195890858971 9.4339e-08 au
tp 2457097.053783761425
(2015-Mar-15.55378376)
7.5653e-05 TDB
node 4.496473423028871 0.00015932 deg
peri 334.1949015558487 0.00016025 deg
i 2.331060763203956 5.1077e-06 deg
  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
 Jupiter MOID = 2.17799 au 
 T_jup = 3.387 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.517309487717674E-15 -3.637876551916906E-15 7.831410196549753E-13 4.151273203457109E-15 1.612838948765762E-13 -1.093506855538377E-16
q -3.637876551916906E-15 8.899822134559132E-15 -2.311604300126217E-12 -9.054823849392496E-15 -4.777969479649247E-13 4.936588743086506E-16
tp 7.831410196549753E-13 -2.311604300126217E-12 5.723340460889678E-9 -3.018693012429767E-11 1.369937104113568E-9 -3.252606609556602E-12
node 4.151273203457109E-15 -9.054823849392496E-15 -3.018693012429767E-11 2.538194137561812E-8 -2.536729949424761E-8 4.655162929083671E-10
peri 1.612838948765762E-13 -4.777969479649247E-13 1.369937104113568E-9 -2.536729949424761E-8 2.567896297526817E-8 -4.658989688474858E-10
i -1.093506855538377E-16 4.936588743086506E-16 -3.252606609556602E-12 4.655162929083671E-10 -4.658989688474858E-10 2.608886854186973E-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 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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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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