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392721 (2012 PD)
Classification: Inner Main-belt Asteroid          SPK-ID: 2392721
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06807245312545776 4.5787e-08  
a 1.92063633117027 1.2545e-08 au
q 1.789893904545631 8.7915e-08 au
i 23.9363287400077 5.8838e-06 deg
node 155.5876898707177 1.2377e-05 deg
peri 89.18967558201048 4.4102e-05 deg
M 38.68071227367949 4.0272e-05 deg
tp 2458896.038057240818
(2020-Feb-16.53805724)
0.00010881 TDB
period 972.2235497430333
2.66
9.5251e-06
2.608e-08
d
yr
n .3702852086797845 3.6278e-09 deg/d
Q 2.05137875779491 1.3399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      8127 days (22.25 yr)  
   first obs. used      1998-03-02  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56317  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 06:55:46  

Additional Information
 Earth MOID = .877638 au 
 Jupiter MOID = 3.02751 au 
 T_jup = 3.817 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457233.5 (2015-Jul-30.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06793935641017328 4.5759e-08  
q 1.790012346980305 8.7838e-08 au
tp 2456951.917534817203
(2014-Oct-21.41753482)
0.00011173 TDB
node 155.6133684697586 1.2374e-05 deg
peri 89.16268140325916 4.4211e-05 deg
i 23.93873301959616 5.8846e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      8127 days (22.25 yr)  
   first obs. used      1998-03-02  
   last obs. used      2020-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56317  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 06:55:46  

Additional Information
 Jupiter MOID = 3.02751 au 
 T_jup = 3.817 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.093902055983784E-15 -3.983783292146216E-15 -2.172007318901014E-13 3.407171657125885E-15 -4.091462721158353E-14 -2.689861929448055E-14
q -3.983783292146216E-15 7.715549203546495E-15 1.25520105571636E-13 -5.60730410705255E-15 -2.414693398506402E-14 5.308263606270897E-14
tp -2.172007318901014E-13 1.25520105571636E-13 1.248328046473049E-8 -1.65029834171924E-11 4.755376813533326E-9 2.489570658536762E-11
node 3.407171657125885E-15 -5.60730410705255E-15 -1.65029834171924E-11 1.531211595248767E-10 -1.459888986970194E-10 5.069607160907054E-12
peri -4.091462721158353E-14 -2.414693398506402E-14 4.755376813533326E-9 -1.459888986970194E-10 1.954611434247835E-9 4.213025647402907E-12
i -2.689861929448055E-14 5.308263606270897E-14 2.489570658536762E-11 5.069607160907054E-12 4.213025647402907E-12 3.46282609327388E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.1   n/a MPO472032  

392721 (2012 PD)          Discovered 1998-Mar-02 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17

Alternate Designations
 2012 PD = 2009 HS74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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