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120462 Amanohashidate (1990 UE2)
Classification: Main-belt Asteroid          SPK-ID: 2120462
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2428511555587781 4.4651e-08  
a 2.392980956562643 8.9746e-09 au
q 1.811842766031255 1.0426e-07 au
i 4.483480500401241 4.5924e-06 deg
node 207.1461236943803 5.6081e-05 deg
peri 165.7572674452657 5.6907e-05 deg
M 121.4643377196584 1.1805e-05 deg
tp 2458940.301790534471
(2020-Mar-31.80179053)
4.2577e-05 TDB
period 1352.095260969841
3.70
7.6063e-06
2.082e-08
d
yr
n .2662534293196003 1.4978e-09 deg/d
Q 2.974119147094031 1.1154e-08 au
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      11124 days (30.46 yr)  
   first obs. used      1990-10-23  
   last obs. used      2021-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54789  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:46:32  

Additional Information
 Earth MOID = .812077 au 
 Jupiter MOID = 2.49628 au 
 T_jup = 3.486 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457054.5 (2015-Feb-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2446071366899582 4.4813e-08  
q 1.806339779742269 1.0477e-07 au
tp 2457588.267155492567
(2016-Jul-18.76715549)
3.7372e-05 TDB
node 207.2135575940886 5.6005e-05 deg
peri 165.6538737052794 5.6812e-05 deg
i 4.487423641320433 4.5982e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      761  
   data-arc span      11124 days (30.46 yr)  
   first obs. used      1990-10-23  
   last obs. used      2021-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54789  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 00:46:32  

Additional Information
 Jupiter MOID = 2.49628 au 
 T_jup = 3.486 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.008219586947423E-15 -4.687081042703744E-15 4.134048964422786E-13 -1.47768579275855E-14 4.531424611573527E-14 -7.538050162474443E-16
q -4.687081042703744E-15 1.097713218685727E-14 -8.501278519530436E-13 3.619850435185577E-14 -8.229090703589642E-14 1.690431009350817E-15
tp 4.134048964422786E-13 -8.501278519530436E-13 1.396699412940671E-9 -4.362717049781069E-13 3.685375274185605E-10 -2.113444988496527E-12
node -1.47768579275855E-14 3.619850435185577E-14 -4.362717049781069E-13 3.13656122390792E-9 -3.125765102721787E-9 1.92445452239899E-11
peri 4.531424611573527E-14 -8.229090703589642E-14 3.685375274185605E-10 -3.125765102721787E-9 3.227639922548696E-9 -1.968987727304281E-11
i -7.538050162474443E-16 1.690431009350817E-15 -2.113444988496527E-12 1.92445452239899E-11 -1.968987727304281E-11 2.114313236109622E-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 15.81   n/a MPCxxxxx  
diameter diameter 4.356 km 0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120462 Amanohashidate           Discovered 1990 Oct. 26 by T. Seki at Geisei.
Amanohashidate is a well-known tourist spot in Japan. It is a sandbar, separating Miyazu Bay and Aso-Umi Lagoon in northern Kyoto and designated as one of the three most scenic spots in Japan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-04-22Last Updated: 2016-04-25

Alternate Designations
 1990 UE2 = 2001 QL97 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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