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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08913754726239184 2.9563e-08  
a 2.467572996141054 7.508e-09 au
q 2.247619591574129 7.2063e-08 au
i 7.833539955701186 3.3368e-06 deg
node 318.546075480152 2.9637e-05 deg
peri 161.2637145358411 3.8434e-05 deg
M 161.6368091510857 2.5658e-05 deg
tp 2458564.816106156044
(2019-Mar-22.31610616)		 9.9889e-05 TDB
period 1415.804995073346
3.88		 6.4618e-06
1.769e-08		 d
yr
n .254272305333511 1.1605e-09 deg/d
Q 2.687526400707979 8.1773e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2431  
   data-arc span      41542 days (113.74 yr)  
   first obs. used      1906-12-21  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40146  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:30:39  

Additional Information
 Earth MOID = 1.26468 au 
 Jupiter MOID = 2.36748 au 
 T_jup = 3.468 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456679.5 (2014-Jan-22.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08979040380856274 2.9651e-08  
q 2.24472532052634 7.2322e-08 au
tp 2457151.645983877384
(2015-May-09.14598388)		 9.6921e-05 TDB
node 318.5867105729487 2.9637e-05 deg
peri 161.5310720707953 3.8264e-05 deg
i 7.835621559388435 3.337e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2431  
   data-arc span      41542 days (113.74 yr)  
   first obs. used      1906-12-21  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40146  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:30:39  

Additional Information
 Jupiter MOID = 2.36748 au 
 T_jup = 3.468 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.79188499855137E-16 -2.134929012496831E-15 -1.297138612184606E-13 -4.086304046927243E-15 -4.41839851265417E-14 -1.378905410501532E-16
q -2.134929012496831E-15 5.230540972807954E-15 4.884012201208957E-13 9.369136420053697E-15 1.465957262825014E-13 3.829992594066288E-16
tp -1.297138612184606E-13 4.884012201208957E-13 9.393627977366216E-9 1.407968896841414E-11 2.363425536347869E-9 -2.630136511411044E-12
node -4.086304046927243E-15 9.369136420053697E-15 1.407968896841414E-11 8.78328104544046E-10 -8.663808833350037E-10 5.972246411417618E-12
peri -4.41839851265417E-14 1.465957262825014E-13 2.363425536347869E-9 -8.663808833350037E-10 1.464138013385888E-9 -6.600410238262092E-12
i -1.378905410501532E-16 3.829992594066288E-16 -2.630136511411044E-12 5.972246411417618E-12 -6.600410238262092E-12 1.11357071997909E-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 12.36   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

[ 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 36 CATAB v2.0f-lin.ifort 2021-Apr-12 12:31:16 2021-Apr-12 12:31
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 36 CATAB v2.0f-lin.ifort 2021-Apr-12 12:31:16 2021-Apr-12 12:31
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 36 CATAB v2.0f-lin.ifort 2021-Apr-12 12:31:16 2021-Apr-12 12:31

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