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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
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Orbital Elements at Epoch 2457244.5 (2015-Aug-10.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05679851392876623 4.8836e-08  
q 2.487241192620802 1.398e-07 au
tp 2457463.116868305919
(2016-Mar-15.61686831)
0.00028912 TDB
node 323.1724431323237 2.2579e-05 deg
peri 70.23094441468616 7.1377e-05 deg
i 11.13013674285368 7.6708e-06 deg
  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
 Jupiter MOID = 2.45105 au 
 T_jup = 3.368 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.384966422856485E-15 -6.746054798761293E-15 -4.341269482111415E-12 9.426371988605403E-15 -9.391004284272722E-13 1.632000826073229E-15
q -6.746054798761293E-15 1.954283736344349E-14 1.155317359271045E-11 -2.612600939962748E-14 2.473830209754453E-12 -3.305089347284418E-15
tp -4.341269482111415E-12 1.155317359271045E-11 8.359214069386122E-8 -9.400921330634859E-11 1.95830952292243E-8 1.923168758810227E-11
node 9.426371988605403E-15 -2.612600939962748E-14 -9.400921330634859E-11 5.097933409280718E-10 -5.210698495951339E-10 9.97548009286679E-13
peri -9.391004284272722E-13 2.473830209754453E-12 1.95830952292243E-8 -5.210698495951339E-10 5.094719216451368E-9 3.480357298897919E-12
i 1.632000826073229E-15 -3.305089347284418E-15 1.923168758810227E-11 9.97548009286679E-13 3.480357298897919E-12 5.884086098190206E-11

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

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