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4399 Ashizuri (1984 UA)
Classification: Main-belt Asteroid          SPK-ID: 2004399
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1722807566310973 2.2006e-08  
a 2.576710823713721 1.0091e-08 au
q 2.132793133384783 6.0077e-08 au
i 12.07817359220811 4.3861e-07 deg
node 244.0109030550519 4.1633e-06 deg
peri 53.96582844042251 6.0285e-06 deg
M 31.97918705623895 7.2934e-06 deg
tp 2459262.297110059725
(2021-Feb-16.79711006)
3.0219e-05 TDB
period 1510.765120249465
4.14
8.875e-06
2.43e-08
d
yr
n .2382898540446546 1.3998e-09 deg/d
Q 3.020628514042659 1.183e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2623  
   data-arc span      25412 days (69.57 yr)  
   first obs. used      1951-12-01  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4092  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:09:17  

Additional Information
 Earth MOID = 1.14104 au 
 Jupiter MOID = 2.20554 au 
 T_jup = 3.375 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457136.5 (2015-Apr-24.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1710946735309317 2.2157e-08  
q 2.137210542717727 6.0267e-08 au
tp 2457750.828716782425
(2016-Dec-28.32871678)
2.7265e-05 TDB
node 244.1502502186065 4.1603e-06 deg
peri 53.56180285575677 6.0141e-06 deg
i 12.07634689281751 4.3971e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2623  
   data-arc span      25412 days (69.57 yr)  
   first obs. used      1951-12-01  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4092  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:09:17  

Additional Information
 Jupiter MOID = 2.20554 au 
 T_jup = 3.375 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.909188528523845E-16 -1.324072257063066E-15 -5.070835257896265E-13 -1.193055058798388E-14 -6.075490343718954E-14 5.328734391340205E-16
q -1.324072257063066E-15 3.632051045206868E-15 1.350119692793353E-12 3.168716029971317E-14 1.562970245337379E-13 -1.445298227180684E-15
tp -5.070835257896265E-13 1.350119692793353E-12 7.433542170827165E-10 2.546759096557253E-12 1.152877917380196E-10 -2.304812159334331E-12
node -1.193055058798388E-14 3.168716029971317E-14 2.546759096557253E-12 1.730783740620235E-11 -1.689252438817381E-11 1.213231606147141E-12
peri -6.075490343718954E-14 1.562970245337379E-13 1.152877917380196E-10 -1.689252438817381E-11 3.616904206692818E-11 -1.652970617153193E-12
i 5.328734391340205E-16 -1.445298227180684E-15 -2.304812159334331E-12 1.213231606147141E-12 -1.652970617153193E-12 1.933443802984579E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.62   n/a E2021B10  
diameter diameter 8.785 km 0.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.829 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Brinsfield, J.W. (2008) Minor Planet Bull. 35, 179-181.]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.275   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4399 Ashizuri (1984 UA)          Discovered 1984-Oct-21 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 UA = 1970 EV2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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