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4447 Kirov (1985 VE1)
Classification: Main-belt Asteroid          SPK-ID: 2004447
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0718414559466061 2.9216e-08  
a 2.857147666893166 1.0863e-08 au
q 2.651886018649112 8.1245e-08 au
i 2.695802353114405 1.0806e-06 deg
node 147.7008262794458 2.5296e-05 deg
peri 193.1582536685448 2.7978e-05 deg
M 179.0735539749271 1.2488e-05 deg
tp 2458519.041856090282
(2019-Feb-04.54185609)
5.8935e-05 TDB
period 1763.995435371361
4.83
1.006e-05
2.754e-08
d
yr
n .2040821607478887 1.1639e-09 deg/d
Q 3.06240931513722 1.1643e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2964  
   data-arc span      17212 days (47.12 yr)  
   first obs. used      1974-04-24  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43998  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:11:05  

Additional Information
 Earth MOID = 1.64243 au 
 Jupiter MOID = 2.22178 au 
 T_jup = 3.298 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456958.5 (2014-Oct-28.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07354673020107926 2.9483e-08  
q 2.645422310005761 8.2216e-08 au
tp 2456743.958581473331
(2014-Mar-27.45858147)
5.5469e-05 TDB
node 147.7749453256305 2.5253e-05 deg
peri 190.8185629149139 2.7702e-05 deg
i 2.696374692477951 1.0829e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2964  
   data-arc span      17212 days (47.12 yr)  
   first obs. used      1974-04-24  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43998  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:11:05  

Additional Information
 Jupiter MOID = 2.22178 au 
 T_jup = 3.298 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.692676518498621E-16 -2.407320056490011E-15 7.438730309159346E-13 1.615885941261713E-13 -7.615448252666886E-14 1.992242071973777E-15
q -2.407320056490011E-15 6.759451406587047E-15 -1.97229073078137E-12 -4.506238251501466E-13 2.359668829739606E-13 -5.534778561263256E-15
tp 7.438730309159346E-13 -1.97229073078137E-12 3.076808995059635E-9 -2.669236659041256E-11 5.903954197065248E-10 2.710674796831692E-11
node 1.615885941261713E-13 -4.506238251501466E-13 -2.669236659041256E-11 6.376931932904371E-10 -6.485501785422248E-10 -8.594146826882232E-12
peri -7.615448252666886E-14 2.359668829739606E-13 5.903954197065248E-10 -6.485501785422248E-10 7.673945478276823E-10 1.378446467625026E-11
i 1.992242071973777E-15 -5.534778561263256E-15 2.710674796831692E-11 -8.594146826882232E-12 1.378446467625026E-11 1.172710849632512E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.60   n/a MPO614063  

4447 Kirov (1985 VE1)          Discovered 1985-Nov-07 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 VE1 = 1974 HO2 = 1976 YV2 = 1980 RK4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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