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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0557180005598178 4.8133e-08  
a 2.636094749200268 2.4663e-08 au
q 2.489216820488594 1.3777e-07 au
i 11.13080427406286 7.6714e-06 deg
node 323.0226456719535 2.2578e-05 deg
peri 72.09324561548254 7.3228e-05 deg
M 352.1195776714731 6.8778e-05 deg
tp 2459034.720546669095
(2020-Jul-04.22054667)
0.0002987 TDB
period 1563.291443946913
4.28
2.1939e-05
6.007e-08
d
yr
n .2302833559244024 3.2318e-09 deg/d
Q 2.782972677911941 2.6037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   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      .47585  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 19:39:34  

Additional Information
 Earth MOID = 1.51777 au 
 Jupiter MOID = 2.45105 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2025-Sep-28 14:42 < 00:01 David 0.0464870483644399 0.0464820402963827 0.046492056823034 8.65365680486633 8.65365676731275 2460947.112243256 0.587218637119564 334.703633399113 75.5698178168623 -43.1233892248596 64694.2679404169 T 14 CATAB v2.0f-lin.ifort 2019-Nov-07 19:39:38 2019-Nov-07 19:39

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