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172109 (2002 GP72)
Classification: Main-belt Asteroid          SPK-ID: 2172109
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1633454444355512 4.0658e-08  
a 2.372376943849364 2.2645e-08 au
q 1.984859977587636 9.5742e-08 au
i 3.212151445565337 4.5801e-06 deg
node 116.9185088402595 0.00010268 deg
peri 168.6130499772747 0.00010548 deg
M 275.684220377169 3.242e-05 deg
tp 2459313.093777101477
(2021-Apr-08.59377710)
0.00012379 TDB
period 1334.670215467708
3.65
1.911e-05
5.232e-08
d
yr
n .2697295525350773 3.862e-09 deg/d
Q 2.759893910111094 2.6344e-08 au
  Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      6117 days (16.75 yr)  
   first obs. used      2002-04-09  
   last obs. used      2019-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60634  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:33:06  

Additional Information
 Earth MOID = .968559 au 
 Jupiter MOID = 2.38939 au 
 T_jup = 3.524 
[ 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 16.3   n/a MPO469843  
diameter diameter 3.044 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.076   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172109 (2002 GP72)          Discovered 2002-Apr-09 by LONEOS at Anderson Mesa
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2002 GP72 = 2003 UK155 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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