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3998 Tezuka (1989 AB)
Classification: Main-belt Asteroid          SPK-ID: 2003998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1964345586730708 3.1585e-08  
a 2.279102922609394 6.195e-09 au
q 1.831408345836112 7.2289e-08 au
i 6.489279881856432 4.6526e-06 deg
node 5.509145264017819 3.1278e-05 deg
peri 76.10497733841362 3.3433e-05 deg
M 301.7381719191388 1.2055e-05 deg
tp 2458803.888287916526
(2019-Nov-16.38828792)
4.2415e-05 TDB
period 1256.736804556291
3.44
5.124e-06
1.403e-08
d
yr
n .2864561606653219 1.1679e-09 deg/d
Q 2.726797499382676 7.4119e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1975  
   data-arc span      27822 days (76.17 yr)  
   first obs. used      1943-10-05  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43048  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:38:07  

Additional Information
 Earth MOID = .859716 au 
 Jupiter MOID = 2.54001 au 
 T_jup = 3.573 
[ show covariance matrix ]

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 12.8   n/a MPO416754  
diameter diameter 6.859 km 0.130 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.0789 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[LeCrone, C.; Duncan, A.; Hudson, E.; Johnson, J.; et al. (2006) Minor Planet Bull. 33, 66-67.]
[Omae, Y.; Ebisu, D.; Kawano, M.; Kanda, T.; et al. (2016) Minor Planet Bull. 43, 272-274.]
geometric albedo albedo 0.260   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3998 Tezuka (1989 AB)          Discovered 1989-Jan-01 by Kojima, T. at Chiyoda
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1989 AB = 1943 TJ = 1950 WD = 1974 SW4 = 1976 JU7 = 1981 UF20 = 1984 SR4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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