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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 | 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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07168861537906662 3.7303e-08  
a 2.856986713768042 1.1563e-08 au
q 2.652173292101622 1.0479e-07 au
i 2.695337658467523 3.5239e-06 deg
node 147.7057540480985 8.1285e-05 deg
peri 192.9545896898346 8.521e-05 deg
M 98.48770080621321 2.5804e-05 deg
tp 2458517.952293099304
(2019-Feb-03.45229310)
0.00012637 TDB
period 1763.846379418083
4.83
1.0708e-05
2.932e-08
d
yr
n .2040994069555926 1.239e-09 deg/d
Q 3.061800135434463 1.2392e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2581  
   data-arc span      16990 days (46.52 yr)  
   first obs. used      1974-04-24  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4561  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:51:30  

Additional Information
 Earth MOID = 1.64346 au 
 Jupiter MOID = 2.22329 au 
 T_jup = 3.298 
[ show covariance matrix ]

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 12.5   n/a MPO416759  

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

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