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JPL Small-Body Database Browser
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172191 Ralphmcnutt (2002 PH152)
Classification: Main-belt Asteroid          SPK-ID: 2172191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05563749317913622 4.8301e-08  
a 2.637012421649459 2.4926e-08 au
q 2.490295661026639 1.3821e-07 au
i 11.12828843440874 7.6702e-06 deg
node 323.0276370332876 2.2619e-05 deg
peri 71.63373808506761 7.3216e-05 deg
M 260.453588377356 6.8648e-05 deg
tp 2459033.003671907438
(2020-Jul-02.50367191)
0.00029864 TDB
period 1564.107830193853
4.28
2.2177e-05
6.072e-08
d
yr
n .2301631595024891 3.2634e-09 deg/d
Q 2.783729182272278 2.6313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      7670 days (21.00 yr)  
   first obs. used      1998-09-18  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50786  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:45:29  

Additional Information
 Earth MOID = 1.51769 au 
 Jupiter MOID = 2.45258 au 
 T_jup = 3.368 
[ 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 15.9   n/a MPO449894  

172191 Ralphmcnutt           Discovered 2002 Aug. 10 by M. W. Buie at Cerro Tololo.
Ralph McNutt (b. 1953) is a senior scientist at the Johns Hopkins University Applied Physics Laboratory. He served as a science team co-investigator and as the Principal Investigator of the PEPSSI instrument aboard the New Horizons Mission to Pluto.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-05-29Last Updated: 2018-09-17

[ show close-approach data ]
Alternate Designations
 2002 PH152 = 2003 YU161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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