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JPL Small-Body Database Browser
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34720 (2001 PH54)
Classification: Main-belt Asteroid          SPK-ID: 2034720
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05601484568538696 4.2514e-08  
a 2.854626357887983 1.7189e-08 au
q 2.69472490296145 1.1858e-07 au
i 2.332165386319948 5.7859e-06 deg
node 169.6419978442267 0.00010935 deg
peri 256.7491538406071 0.00012131 deg
M 226.3524893802663 5.2059e-05 deg
tp 2459654.504455654392
(2022-Mar-16.00445565)
0.00025577 TDB
period 1761.660976278724
4.82
1.5911e-05
4.356e-08
d
yr
n .2043525995339083 1.8457e-09 deg/d
Q 3.014527812814517 1.8151e-08 au
  Orbit Determination Parameters
   # obs. used (total)      645  
   data-arc span      14789 days (40.49 yr)  
   first obs. used      1978-11-29  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5979  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:33:41  

Additional Information
 Earth MOID = 1.70947 au 
 Jupiter MOID = 2.15467 au 
 T_jup = 3.301 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456710.5 (2014-Feb-22.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05918872622451939 4.2921e-08  
q 2.68084583871335 1.2039e-07 au
tp 2456134.196300825454
(2012-Jul-25.69630083)
0.00023496 TDB
node 169.8134915271252 0.00010947 deg
peri 256.0381660914549 0.00012002 deg
i 2.331900408471859 5.7883e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      645  
   data-arc span      14789 days (40.49 yr)  
   first obs. used      1978-11-29  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5979  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:33:41  

Additional Information
 Jupiter MOID = 2.15467 au 
 T_jup = 3.301 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.842243913569855E-15 -5.124424054528776E-15 -2.324020374468969E-12 -5.914562774222563E-15 -5.001561184847538E-13 8.937343933983869E-17
q -5.124424054528776E-15 1.449301645219473E-14 6.895657831105241E-12 1.652521910262665E-14 1.497274928269845E-12 -6.446509650314527E-17
tp -2.324020374468969E-12 6.895657831105241E-12 5.520642550462958E-8 -4.598735155113912E-11 1.15806136043289E-8 -4.879438280794312E-12
node -5.914562774222563E-15 1.652521910262665E-14 -4.598735155113912E-11 1.198276550944566E-8 -1.198173217896072E-8 7.340828496919314E-11
peri -5.001561184847538E-13 1.497274928269845E-12 1.15806136043289E-8 -1.198173217896072E-8 1.440489877542299E-8 -7.433500904239926E-11
i 8.937343933983869E-17 -6.446509650314527E-17 -4.879438280794312E-12 7.340828496919314E-11 -7.433500904239926E-11 3.350406351372047E-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 15.1   n/a MPO263636  

34720 (2001 PH54)          Discovered 2001-Aug-14 by JPL/GEODSS NEAT at Haleakala
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 PH54 = 1978 WJ11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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