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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08955660361735421 2.9689e-08  
a 2.466261481251465 7.5923e-09 au
q 2.245391479358279 7.2401e-08 au
i 7.832708068306402 3.3611e-06 deg
node 318.5545577216829 2.9835e-05 deg
peri 160.9957439553781 3.8635e-05 deg
M 111.0285663094922 2.5692e-05 deg
tp 2458564.195855854418
(2019-Mar-21.69585585)
0.00010026 TDB
period 1414.676394672865
3.87
6.5326e-06
1.789e-08
d
yr
n .254475158669236 1.1751e-09 deg/d
Q 2.687131483144652 8.2723e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2364  
   data-arc span      41502 days (113.63 yr)  
   first obs. used      1906-12-21  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40492  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:35:23  

Additional Information
 Earth MOID = 1.2626 au 
 Jupiter MOID = 2.3692 au 
 T_jup = 3.468 
[ 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 12.3   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 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:35:51 2020-Aug-24 22:35
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 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:35:51 2020-Aug-24 22:35
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 34 CATAB v2.0f-lin.ifort 2020-Aug-24 22:35:51 2020-Aug-24 22:35

Alternate Designations
 1938 CF = 1934 CG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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