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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2602869429106386 3.868e-08  
a 2.557241998014963 1.9116e-08 au
q 1.891625296068954 9.3118e-08 au
i 2.324801428284041 4.5264e-06 deg
node 4.41486477995144 0.00013756 deg
peri 334.3861535760837 0.00013827 deg
M 194.1957058106366 1.6031e-05 deg
tp 2460084.438227018123
(2023-May-19.93822702)
6.894e-05 TDB
period 1493.675196636805
4.09
1.6748e-05
4.585e-08
d
yr
n .2410162536076013 2.7025e-09 deg/d
Q 3.222858699960971 2.4092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      649  
   data-arc span      8277 days (22.66 yr)  
   first obs. used      1998-07-21  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50716  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:01:39  

Additional Information
 Earth MOID = .882325 au 
 Jupiter MOID = 2.17819 au 
 T_jup = 3.387 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457605.5 (2016-Aug-05.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2620849944931095 3.888e-08  
q 1.885493874659937 9.3783e-08 au
tp 2457096.980524941358
(2015-Mar-15.48052494)
6.3873e-05 TDB
node 4.496508357109377 0.00013714 deg
peri 334.1912818457761 0.00013784 deg
i 2.331050516465697 4.529e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      649  
   data-arc span      8277 days (22.66 yr)  
   first obs. used      1998-07-21  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50716  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:01:39  

Additional Information
 Jupiter MOID = 2.17819 au 
 T_jup = 3.387 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.511641430594386E-15 -3.614515421177468E-15 7.22740817345355E-13 8.237057599933631E-15 1.420569486677154E-13 3.39401651159E-17
q -3.614515421177468E-15 8.795279051776727E-15 -1.96083054669946E-12 -2.020143673764945E-14 -3.784404767226302E-13 1.967020416297936E-17
tp 7.22740817345355E-13 -1.96083054669946E-12 4.079768806667675E-9 -6.519918731466202E-12 9.333469350091155E-10 -1.813932506684671E-12
node 8.237057599933631E-15 -2.020143673764945E-14 -6.519918731466202E-12 1.880717953825119E-8 -1.879244804911292E-8 2.755647235307727E-10
peri 1.420569486677154E-13 -3.784404767226302E-13 9.333469350091155E-10 -1.879244804911292E-8 1.900028927226293E-8 -2.757551274319692E-10
i 3.39401651159E-17 1.967020416297936E-17 -1.813932506684671E-12 2.755647235307727E-10 -2.757551274319692E-10 2.051208939749761E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.59   n/a MPCxxxxx  

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

Alternate Designations
 2002 NU56 = 2000 AF94 = 2003 YQ77 = 2005 EX53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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