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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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719268898770905 3.4057e-08  
a 2.57572556943611 1.1487e-08 au
q 2.132889083106062 8.8747e-08 au
i 12.08230750040998 4.9743e-06 deg
node 244.0434027471055 1.7866e-05 deg
peri 54.09476331265505 2.3571e-05 deg
M 297.4650184918847 1.7108e-05 deg
tp 2459262.781908863955
(2021-Feb-17.28190886)
7.2444e-05 TDB
period 1509.89869851917
4.13
1.01e-05
2.765e-08
d
yr
n .2384265913687251 1.5949e-09 deg/d
Q 3.018562055766158 1.3461e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2160  
   data-arc span      24898 days (68.17 yr)  
   first obs. used      1951-12-01  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43978  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:12:29  

Additional Information
 Earth MOID = 1.14158 au 
 Jupiter MOID = 2.21001 au 
 T_jup = 3.376 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456668.5 (2014-Jan-11.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1722356758742289 3.4426e-08  
q 2.131917746730894 8.9846e-08 au
tp 2456238.054188418018
(2012-Nov-06.55418842)
6.6012e-05 TDB
node 244.2568655523694 1.7839e-05 deg
peri 53.14068369239524 2.3472e-05 deg
i 12.09480074074258 4.977e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2160  
   data-arc span      24898 days (68.17 yr)  
   first obs. used      1951-12-01  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43978  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:12:29  

Additional Information
 Jupiter MOID = 2.21001 au 
 T_jup = 3.376 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.185178135450013E-15 -3.075532725703314E-15 -5.016545002263662E-13 -3.685295318258711E-16 -1.282284919186863E-13 2.073308918657514E-16
q -3.075532725703314E-15 8.072246951242364E-15 1.397793767361851E-12 -4.512129649251863E-18 3.602931400877733E-13 1.130069647765442E-17
tp -5.016545002263662E-13 1.397793767361851E-12 4.357553514529567E-9 -8.538427277986026E-12 1.018777054776521E-9 1.660885550100147E-12
node -3.685295318258711E-16 -4.512129649251863E-18 -8.538427277986026E-12 3.182406581863623E-10 -3.125188508139196E-10 -9.404146349642985E-12
peri -1.282284919186863E-13 3.602931400877733E-13 1.018777054776521E-9 -3.125188508139196E-10 5.509132446747526E-10 9.572572207942671E-12
i 2.073308918657514E-16 1.130069647765442E-17 1.660885550100147E-12 -9.404146349642985E-12 9.572572207942671E-12 2.47700362410182E-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 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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