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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07174713648806463 3.7209e-08  
a 2.857287818833653 1.1188e-08 au
q 2.65228559971011 1.0428e-07 au
i 2.695533298044767 3.4582e-06 deg
node 147.7014859752273 7.5877e-05 deg
peri 193.078540102742 7.9581e-05 deg
M 139.1691392805762 2.4678e-05 deg
tp 2458518.522805560484
(2019-Feb-04.02280556)
0.0001205 TDB
period 1764.125231120773
4.83
1.0361e-05
2.837e-08
d
yr
n .2040671453756642 1.1986e-09 deg/d
Q 3.062290037957196 1.1991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2704  
   data-arc span      17074 days (46.75 yr)  
   first obs. used      1974-04-24  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45028  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:17:58  

Additional Information
 Earth MOID = 1.64173 au 
 Jupiter MOID = 2.2225 au 
 T_jup = 3.298 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456796.5 (2014-May-19.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07368003592252242 3.7433e-08  
q 2.645457615783511 1.0511e-07 au
tp 2456744.164971117191
(2014-Mar-27.66497112)
0.00011642 TDB
node 147.7728993841886 7.5774e-05 deg
peri 190.8675742801996 7.9273e-05 deg
i 2.696276045181989 3.4633e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2704  
   data-arc span      17074 days (46.75 yr)  
   first obs. used      1974-04-24  
   last obs. used      2021-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45028  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:17:58  

Additional Information
 Jupiter MOID = 2.2225 au 
 T_jup = 3.298 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.40123849850064E-15 -3.916710537559213E-15 1.054754831768113E-12 6.704333446724872E-15 1.605078495720888E-13 -5.089258452461845E-16
q -3.916710537559213E-15 1.104786313393138E-14 -2.964496872614758E-12 -1.83961121361681E-14 -4.524609928522083E-13 1.451771723990582E-15
tp 1.054754831768113E-12 -2.964496872614758E-12 1.355351400570968E-8 1.388180409131843E-11 2.724566459592741E-9 -2.063647081095993E-12
node 6.704333446724872E-15 -1.83961121361681E-14 1.388180409131843E-11 5.741715663609031E-9 -5.732408424002192E-9 4.203991585553132E-11
peri 1.605078495720888E-13 -4.524609928522083E-13 2.724566459592741E-9 -5.732408424002192E-9 6.28428425338926E-9 -4.239875690837562E-11
i -5.089258452461845E-16 1.451771723990582E-15 -2.063647081095993E-12 4.203991585553132E-11 -4.239875690837562E-11 1.199456707842629E-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 12.58   n/a E2021B10  

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

[ show close-approach data ]
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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