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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 ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08867449524486236 2.9281e-08  
a 2.468419000778001 7.7022e-09 au
q 2.249533191831184 7.1324e-08 au
i 7.833222241435053 3.3374e-06 deg
node 318.5447207401809 2.9149e-05 deg
peri 161.6463884656046 3.803e-05 deg
M 211.002626609406 2.5781e-05 deg
tp 2459982.777003845170
(2023-Feb-07.27700385)
0.00010244 TDB
period 1416.533168212112
3.88
6.63e-06
1.815e-08
d
yr
n .254141595889616 1.1895e-09 deg/d
Q 2.687304809724818 8.3851e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2518  
   data-arc span      41827 days (114.52 yr)  
   first obs. used      1906-12-21  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39627  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:26:08  

Additional Information
 Earth MOID = 1.26708 au 
 Jupiter MOID = 2.36638 au 
 T_jup = 3.467 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.36   n/a E2021B10  
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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