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7415 Susumuimoto (1990 VL8)
Classification: Main-belt Asteroid          SPK-ID: 2007415
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600588461395999 4.2818e-08  
a 3.177058400692782 1.5595e-08 au
q 2.668542098959773 1.3897e-07 au
i 2.63082389470422 3.596e-06 deg
node 110.7278992121603 9.356e-05 deg
peri 247.9529990065101 9.3963e-05 deg
M 138.3652641948938 9.6061e-06 deg
tp 2458405.511585009479
(2018-Oct-14.01158501)
5.4313e-05 TDB
period 2068.40807237189
5.66
1.523e-05
4.17e-08
d
yr
n .1740468937481858 1.2815e-09 deg/d
Q 3.685574702425792 1.8092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2445  
   data-arc span      17316 days (47.41 yr)  
   first obs. used      1973-10-26  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47886  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 23:26:38  

Additional Information
 Earth MOID = 1.66463 au 
 Jupiter MOID = 1.76576 au 
 T_jup = 3.179 
[ 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 13.05   n/a MPCxxxxx  
diameter diameter 12.994 km 0.764 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.71 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.087   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7415 Susumuimoto           Discovered 1990 Nov. 14 by T. Seki at Geisei.
Susumu Imoto (1901-1981) studied the history of astronomy and old Japanese calendars. With I. Hasegawa, he compiled a catalogue of meteor showers and lent support to the world calendar proposed by E. Achelis.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000124/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1990 VL8 = 1973 UG1 = 1984 SX6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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