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JPL Small-Body Database Browser
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8256 Shenzhou (1981 UZ9)
Classification: Mars-crossing Asteroid          SPK-ID: 2008256
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2486125846330266 4.3654e-08  
a 2.197275128491873 6.3235e-09 au
q 1.651004879647643 9.4723e-08 au
i 6.844995293643633 3.8781e-06 deg
node 42.18768722585452 2.9747e-05 deg
peri 21.70903279912937 3.0566e-05 deg
M 288.1355162386811 7.7107e-06 deg
tp 2459237.985389388658
(2021-Jan-23.48538939)
2.5901e-05 TDB
period 1189.66610076638
3.26
5.1356e-06
1.406e-08
d
yr
n .3026059158684011 1.3063e-09 deg/d
Q 2.743545377336104 7.8956e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1795  
   data-arc span      13824 days (37.85 yr)  
   first obs. used      1981-10-22  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:49:50  

Additional Information
 Earth MOID = .66618 au 
 Jupiter MOID = 2.60089 au 
 T_jup = 3.618 
[ 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 13.7   n/a MPO492848  
rotation period rot_per 3.395 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Crawford, G. (2008) Minor Planet Bull. 35, 15.]
[Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm]
[Benishek, V. (2018) Minor Planet Bull. 45, 187-189.]
[Stephens, R.D. (2018) Minor Planet Bull. 45, 299-301.]

8256 Shenzhou           Discovered 1981 Oct. 25 at the Purple Mountain Observatory.
Shenzhou, meaning "Miracle Ship", is the name of the first series of Chinese manned spaceships.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041126/MPCPages.arcLast Updated: 2004-12-06

Alternate Designations
 1981 UZ9 = 1994 TO1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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