+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1478 Vihuri (1938 CF) Classification: Main-belt Asteroid          SPK-ID: 2001478 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0895566034934278 2.9645e-08   a 2.46626148132222 7.5812e-09 au q 2.245391479728332 7.2272e-08 au i 7.832707870760147 3.3432e-06 deg node 318.5545563745702 2.9742e-05 deg peri 160.995745217435 3.8529e-05 deg M 111.0285663484535 2.5662e-05 deg tp 2458564.195855682538 (2019-Mar-21.69585568) 0.00010014 TDB period 1414.676394733744 3.87 6.523e-06 1.786e-08 d yr n .2544751586582849 1.1734e-09 deg/d Q 2.687131482916108 8.2601e-09 au   Orbit Determination Parameters    # obs. used (total)      2419      data-arc span      41542 days (113.74 yr)      first obs. used      1906-12-21      last obs. used      2020-09-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40245      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:18:35   Additional Information  Earth MOID = 1.2626 au   Jupiter MOID = 2.3692 au   T_jup = 3.468  [ hide covariance matrix ] Orbital Elements at Epoch 2456673.5 (2014-Jan-16.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08978656088623732 2.9698e-08   q 2.244750243315074 7.2402e-08 au tp 2457151.635395139463 (2015-May-09.13539514) 9.7697e-05 TDB node 318.5866544840963 2.9725e-05 deg peri 161.5272430709345 3.844e-05 deg i 7.8356094257139 3.3438e-06 deg   Orbit Determination Parameters    # obs. used (total)      2419      data-arc span      41542 days (113.74 yr)      first obs. used      1906-12-21      last obs. used      2020-09-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40245      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:18:35   Additional Information  Jupiter MOID = 2.3692 au   T_jup = 3.468  Orbit Covariance (6×6)   e q tp node peri i e 8.819417269394429E-16 -2.14056372472455E-15 -1.095777935913538E-13 -3.959582100307428E-15 -3.96372389949124E-14 -1.275621561318558E-16 q -2.14056372472455E-15 5.24209172771744E-15 4.474273759434802E-13 9.046731758393142E-15 1.374081836625453E-13 3.554312225250914E-16 tp -1.095777935913538E-13 4.474273759434802E-13 9.544800945213942E-9 1.368813676089521E-11 2.398903714810743E-9 -2.695581986644114E-12 node -3.959582100307428E-15 9.046731758393142E-15 1.368813676089521E-11 8.835720191090397E-10 -8.71676856634219E-10 6.443844756561515E-12 peri -3.96372389949124E-14 1.374081836625453E-13 2.398903714810743E-9 -8.71676856634219E-10 1.477629027770466E-9 -7.083915630094617E-12 i -1.275621561318558E-16 3.554312225250914E-16 -2.695581986644114E-12 6.443844756561515E-12 -7.083915630094617E-12 1.118105463532123E-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 12.3   n/a MPO473783   diameter diameter 9.523 km 1.298 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 19.5 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong. Published Reference List: [Binzel, R.P. (1987) Icarus 72, 135-208.] geometric albedo albedo 0.126   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.840   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=13.55 deg. U-B UB 0.570   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=13.55 deg. 1478 Vihuri (1938 CF)          Discovered 1938-Feb-06 by Vaisala, Y. at Turku Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2044-Aug-23 21:20 < 00:01 Psych 0.0447786303749384 0.0447755659145109 0.0447816948394192 4.14959909644506 4.14959903133078 2467851.388814810 0.788587462371789 154.242357511165 33.0364815362926 8.31931809657318 51987.8320184538 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:18:42 2020-Nov-13 04:18 2080-Oct-28 22:48 < 00:01 Eunom 0.0302637480659378 0.0302586055624837 0.0302688913491133 4.21990035597621 4.21990024605817 2481066.450261661 0.492363871885708 354.68895919953 42.0743872501642 44.1479790619758 75432.9337478399 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:18:42 2020-Nov-13 04:18 2119-Jul-11 16:23 < 00:01 Eunom 0.0483816810950196 0.0483726526484413 0.0483907101413467 4.67305641856873 4.67305635648013 2495200.182913999 0.376372227339882 524.606944689047 43.159963290826 -31.0591183139825 87253.4961948737 T 35 CATAB v2.0f-lin.ifort 2020-Nov-13 04:18:42 2020-Nov-13 04:18 Alternate Designations  1938 CF = 1934 CG  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-27 05:22 UT (server date/time)   Site Manager:   Ryan S. 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