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4785 Petrov (1984 YH1)
Classification: Main-belt Asteroid          SPK-ID: 2004785
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06219170053165201 2.918e-08  
a 2.664628347790212 1.0059e-08 au
q 2.498910579556292 7.8513e-08 au
i 2.675219782586602 4.0791e-06 deg
node 301.504556327375 7.834e-05 deg
peri 115.7848133312913 8.7566e-05 deg
M 72.1982338759486 3.8014e-05 deg
tp 2458681.876748076354
(2019-Jul-17.37674808)
0.00016768 TDB
period 1588.742058283563
4.35
8.9959e-06
2.463e-08
d
yr
n .2265943663560685 1.283e-09 deg/d
Q 2.830346116024131 1.0684e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2450  
   data-arc span      15267 days (41.80 yr)  
   first obs. used      1978-07-09  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48263  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:12:32  

Additional Information
 Earth MOID = 1.51225 au 
 Jupiter MOID = 2.37137 au 
 T_jup = 3.380 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456521.5 (2013-Aug-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06033539956255203 2.909e-08  
q 2.504356918540025 7.8097e-08 au
tp 2457089.034948035411
(2015-Mar-07.53494804)
0.00017393 TDB
node 301.6863463579021 7.8168e-05 deg
peri 114.7340951011045 8.8057e-05 deg
i 2.678067446624436 4.0834e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2450  
   data-arc span      15267 days (41.80 yr)  
   first obs. used      1978-07-09  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48263  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:12:32  

Additional Information
 Jupiter MOID = 2.37137 au 
 T_jup = 3.380 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.462549569998787E-16 -2.255262566933619E-15 -6.097175629361351E-13 -4.675645656308321E-16 -1.491004554602508E-13 -2.108497451251733E-16
q -2.255262566933619E-15 6.099069467509453E-15 1.617206854603994E-12 -1.063488910366125E-16 3.88861820440963E-13 6.783129626960187E-16
tp -6.097175629361351E-13 1.617206854603994E-12 3.025137883984579E-8 -1.4834768324773E-11 7.0653401512011E-9 1.200442101798739E-12
node -4.675645656308321E-16 -1.063488910366125E-16 -1.4834768324773E-11 6.110264160487694E-9 -6.106541545264351E-9 8.28445158303932E-11
peri -1.491004554602508E-13 3.88861820440963E-13 7.0653401512011E-9 -6.106541545264351E-9 7.754083408422133E-9 -8.247972730967369E-11
i -2.108497451251733E-16 6.783129626960187E-16 1.200442101798739E-12 8.28445158303932E-11 -8.247972730967369E-11 1.667445891999387E-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 13.5   n/a MPO358676  

4785 Petrov (1984 YH1)          Discovered 1984-Dec-17 by Karachkina, L. G. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 YH1 = 1978 NC1 = 1979 SE5 = 1981 AN2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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