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7590 Aterui (1992 UP4)
Classification: Main-belt Asteroid          SPK-ID: 2007590
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09619744858136028 2.6908e-08  
a 2.22474057951895 6.0625e-09 au
q 2.01072621201381 5.972e-08 au
i 6.384474768238916 3.0601e-06 deg
node 127.1092105690577 2.9108e-05 deg
peri 352.425547221926 3.4581e-05 deg
M 43.25157261010891 1.7785e-05 deg
tp 2458854.881385817129
5.9921e-05 TDB
period 1212.041503748265
n .2970195318284829 1.2141e-09 deg/d
Q 2.43875494702409 6.6457e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2305  
   data-arc span      10091 days (27.63 yr)  
   first obs. used      1992-10-26  
   last obs. used      2020-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43605  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:41:59  

Additional Information
 Earth MOID = 1.02683 au 
 Jupiter MOID = 2.61225 au 
 T_jup = 3.632 
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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 14.11   n/a E2021B10  
diameter diameter 4.211 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.58993 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.398   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

7590 Aterui           Discovered 1992 Oct. 26 by K. Endate and K. Watanabe at Kitami.
Aterui, patriarch of the Ainu tribe in northern Japan in the late eighth century, was believed to have had a castle in the present Mizusawa City. He resisted military invasion by the central government. He was eventually compelled to surrender to the commander of the Kyoto troops and was executed near Kyoto in 801.
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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
2166-Oct-16 08:41 < 00:01 Vesta 0.0486495780518054 0.0486269482475653 0.0486722090980056 3.76969975557283 3.7696991067759 2512463.861910342 0.981490186638911 1189.74261950984 36.885620324215 19.0818513541458 64451.4840551852 T 39 CATAB v2.0f-lin.ifort 2020-Jun-23 16:42:14 2020-Jun-23 16:42
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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