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JPL Small-Body Database Browser
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172154 (2002 NR13)
Classification: Main-belt Asteroid          SPK-ID: 2172154
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1269827354316521 5.1214e-08  
a 2.410949752597149 1.3034e-08 au
q 2.104800758024098 1.2582e-07 au
i 5.893358113687014 5.4538e-06 deg
node 279.7975223859922 5.3376e-05 deg
peri 71.55914027635546 5.7282e-05 deg
M 238.5992779020343 2.1824e-05 deg
tp 2459461.604578838588
(2021-Sep-04.10457884)
8.4529e-05 TDB
period 1367.353056169945
3.74
1.1088e-05
3.036e-08
d
yr
n .2632824041863672 2.1351e-09 deg/d
Q 2.7170987471702 1.4689e-08 au
  Orbit Determination Parameters
   # obs. used (total)      457  
   data-arc span      7999 days (21.90 yr)  
   first obs. used      1997-03-03  
   last obs. used      2019-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57817  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:01:14  

Additional Information
 Earth MOID = 1.10752 au 
 Jupiter MOID = 2.69396 au 
 T_jup = 3.501 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO433105  

172154 (2002 NR13)          Discovered 2002-Jul-04 by NEAT at Palomar
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

Alternate Designations
 2002 NR13 = 1997 EQ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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