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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719269039891402 3.0316e-08  
a 2.575725573728433 1.0256e-08 au
q 2.132889050311651 8.1217e-08 au
i 12.08230601274591 4.6265e-06 deg
node 244.0433974072029 1.6318e-05 deg
peri 54.0947682780241 2.2372e-05 deg
M 297.4650161184268 1.6746e-05 deg
tp 2459262.781919474244
(2021-Feb-17.28191947)
7.0777e-05 TDB
period 1509.898702293431
4.13
9.0185e-06
2.469e-08
d
yr
n .2384265907727354 1.4241e-09 deg/d
Q 3.018562097145214 1.202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2507  
   data-arc span      25083 days (68.67 yr)  
   first obs. used      1951-12-01  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41296  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:15:16  

Additional Information
 Earth MOID = 1.14158 au 
 Jupiter MOID = 2.21001 au 
 T_jup = 3.376 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO473826  
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. 2019-August); 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.]
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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