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JPL Small-Body Database Browser
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172172 (2002 PU23)
Classification: Main-belt Asteroid          SPK-ID: 2172172
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0741259373860607 8.2459e-08  
a 2.468116597926256 1.9017e-08 au
q 2.285165141526877 2.1293e-07 au
i 5.420238522076427 6.2107e-06 deg
node 294.2201118020524 5.1594e-05 deg
peri 238.6038942305138 6.4123e-05 deg
M 351.855881997611 3.9924e-05 deg
tp 2459032.539703817541
(2020-Jul-02.03970382)
0.00015709 TDB
period 1416.272869687215
3.88
1.6368e-05
4.481e-08
d
yr
n .2541883048847122 2.9377e-09 deg/d
Q 2.651068054325635 2.0426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      6891 days (18.87 yr)  
   first obs. used      2001-03-24  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56002  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:44:44  

Additional Information
 Earth MOID = 1.29637 au 
 Jupiter MOID = 2.34419 au 
 T_jup = 3.476 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457301.5 (2015-Oct-06.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07461427667426432 8.2411e-08  
q 2.283587845157868 2.1278e-07 au
tp 2457618.657543731208
(2016-Aug-18.15754373)
0.00015727 TDB
node 294.2899242210875 5.157e-05 deg
peri 239.2206557692892 6.4138e-05 deg
i 5.421754110715825 6.2132e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      6891 days (18.87 yr)  
   first obs. used      2001-03-24  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56002  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:44:44  

Additional Information
 Jupiter MOID = 2.34419 au 
 T_jup = 3.476 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.79151227713983E-15 -1.749076474536019E-14 -6.078886122362757E-12 -2.652482164876962E-14 -1.19370630170702E-12 8.146379715892997E-15
q -1.749076474536019E-14 4.527588939144724E-14 1.493140875498764E-11 6.897071525186748E-14 2.879403025641244E-12 -2.035204152445304E-14
tp -6.078886122362757E-12 1.493140875498764E-11 2.473362830240378E-8 1.320155268342347E-11 5.989069413461836E-9 -1.060876095811712E-11
node -2.652482164876962E-14 6.897071525186748E-14 1.320155268342347E-11 2.659445530836953E-9 -2.644838448912912E-9 9.068085343020531E-11
peri -1.19370630170702E-12 2.879403025641244E-12 5.989069413461836E-9 -2.644838448912912E-9 4.113678565203975E-9 -9.263868956054336E-11
i 8.146379715892997E-15 -2.035204152445304E-14 -1.060876095811712E-11 9.068085343020531E-11 -9.263868956054336E-11 3.860335169783483E-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 16.3   n/a MPO454180  

172172 (2002 PU23)          Discovered 2002-Aug-06 by NEAT at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

Alternate Designations
 2002 PU23 = 2001 FR146 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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