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4948 Hideonishimura (1988 VF1)
Classification: Main-belt Asteroid          SPK-ID: 2004948
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1928958329278867 3.6666e-08  
a 2.168990630043976 7.3887e-09 au
q 1.750601375848862 7.9378e-08 au
i 3.095885896435569 4.0567e-06 deg
node 246.4946026570018 6.9479e-05 deg
peri 124.8875009884686 7.0491e-05 deg
M 342.0189967074733 1.6278e-05 deg
tp 2459058.776889100316
(2020-Jul-28.27688910)
5.2977e-05 TDB
period 1166.7691582501
3.19
5.9619e-06
1.632e-08
d
yr
n .3085443229746677 1.5766e-09 deg/d
Q 2.587379884239091 8.814e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1989  
   data-arc span      22245 days (60.90 yr)  
   first obs. used      1959-09-09  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48859  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:21:52  

Additional Information
 Earth MOID = .752985 au 
 Jupiter MOID = 2.88659 au 
 T_jup = 3.664 
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Orbital Elements at Epoch 2456654.5 (2013-Dec-28.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1928163803844639 3.6594e-08  
q 1.750830766071923 7.9216e-08 au
tp 2456724.886568395163
(2014-Mar-08.38656840)
4.516e-05 TDB
node 246.6158994853795 6.9451e-05 deg
peri 124.7541360338661 7.0471e-05 deg
i 3.096193310189836 4.0578e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1989  
   data-arc span      22245 days (60.90 yr)  
   first obs. used      1959-09-09  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48859  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:21:52  

Additional Information
 Jupiter MOID = 2.88659 au 
 T_jup = 3.664 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.33915473475513E-15 -2.890810645833394E-15 2.65157905143794E-13 -3.16201669480258E-15 5.027090890093043E-14 -1.051546776295171E-16
q -2.890810645833394E-15 6.275171319900886E-15 -4.125314186227723E-13 8.231607616546253E-15 -6.804231712818039E-14 1.751020078103449E-16
tp 2.65157905143794E-13 -4.125314186227723E-13 2.039416722759541E-9 1.365102190358589E-11 5.511901631222244E-10 -7.80412039354551E-13
node -3.16201669480258E-15 8.231607616546253E-15 1.365102190358589E-11 4.823392053333504E-9 -4.812082698700503E-9 -1.439317680491013E-11
peri 5.027090890093043E-14 -6.804231712818039E-14 5.511901631222244E-10 -4.812082698700503E-9 4.966230967050996E-9 1.415562281958812E-11
i -1.051546776295171E-16 1.751020078103449E-16 -7.80412039354551E-13 -1.439317680491013E-11 1.415562281958812E-11 1.646603892545626E-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 14.0   n/a MPO337294  
diameter diameter 3.879 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.335   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4948 Hideonishimura           Discovered 1988 Nov. 3 at Oohira.
Hideo Nishimura (b. 1949) started to search for new comets in 1965 and eventually found C/1994 N1 (Nakamura-Nishimura-Machholz). He also discovered nine novae during 2003--2008. He continues his searches and makes an effort to popularize astronomy in Kakegawa city. The name was suggested by S. Kaneko.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

Alternate Designations
 1988 VF1 = 1959 RO = 1972 TH4 = 1972 VM = 1980 BW2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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