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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08867449541194633 2.8267e-08  
a 2.46841900084496 7.4643e-09 au
q 2.249533191479772 6.9236e-08 au
i 7.833222363814319 3.3333e-06 deg
node 318.5447129183593 2.7073e-05 deg
peri 161.6463961552339 3.6013e-05 deg
M 211.0026266403958 2.5394e-05 deg
tp 2459982.777003747086
(2023-Feb-07.27700375)
0.00010105 TDB
period 1416.533168269749
3.88
6.4252e-06
1.759e-08
d
yr
n .2541415958792752 1.1527e-09 deg/d
Q 2.687304810210147 8.1261e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2617  
   data-arc span      41869 days (114.63 yr)  
   first obs. used      1906-12-21  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39048  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:45:17  

Additional Information
 Earth MOID = 1.26708 au 
 Jupiter MOID = 2.36638 au 
 T_jup = 3.467 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456912.5 (2014-Sep-12.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08986930713855122 2.8429e-08  
q 2.244310810559925 6.9803e-08 au
tp 2457151.833745350388
(2015-May-09.33374535)
9.4233e-05 TDB
node 318.5870013605264 2.7081e-05 deg
peri 161.5991537977748 3.573e-05 deg
i 7.835644148278116 3.3326e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2617  
   data-arc span      41869 days (114.63 yr)  
   first obs. used      1906-12-21  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39048  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:45:17  

Additional Information
 Jupiter MOID = 2.36638 au 
 T_jup = 3.467 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.08203493184005E-16 -1.975461472669737E-15 5.905040915153679E-14 -1.953311201266489E-15 9.998126950587827E-15 -2.29003786864328E-16
q -1.975461472669737E-15 4.872412079089072E-15 6.116789491752259E-14 4.442976183431656E-15 2.422513588278448E-14 5.848756583555392E-16
tp 5.905040915153679E-14 6.116789491752259E-14 8.879820630337125E-9 1.45850698607831E-11 2.210743612254968E-9 -2.416934977879095E-12
node -1.953311201266489E-15 4.442976183431656E-15 1.45850698607831E-11 7.333961870633609E-10 -7.227390821695483E-10 7.596499306738827E-12
peri 9.998126950587827E-15 2.422513588278448E-14 2.210743612254968E-9 -7.227390821695483E-10 1.276627965369046E-9 -8.145921597724653E-12
i -2.29003786864328E-16 5.848756583555392E-16 -2.416934977879095E-12 7.596499306738827E-12 -8.145921597724653E-12 1.110638635249342E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.35   n/a MPO636084  
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.DBLast Updated: 2003-08-29

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