+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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.DB Last 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 ] 2021-Mar-05 14:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin