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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 ]

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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 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. 2019-August); 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.DBLast Updated: 2003-08-29

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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 ]
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