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3089 Oujianquan (1981 XK2)
Classification: Main-belt Asteroid          SPK-ID: 2003089
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1867346511815098 4.8354e-08  
a 2.928485139453672 1.4175e-08 au
q 2.381635488447556 1.4453e-07 au
i 16.70117255193011 5.1747e-06 deg
node 88.21649045829777 1.2554e-05 deg
peri 184.0874816525335 1.6369e-05 deg
M 54.41098290209934 9.7709e-06 deg
tp 2458723.839578555674
(2019-Aug-28.33957856)
4.9498e-05 TDB
period 1830.471467482252
5.01
1.329e-05
3.639e-08
d
yr
n .1966706427252686 1.4279e-09 deg/d
Q 3.475334790459789 1.6822e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2408  
   data-arc span      20222 days (55.36 yr)  
   first obs. used      1964-06-11  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42159  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:38:22  

Additional Information
 Earth MOID = 1.36571 au 
 Jupiter MOID = 1.647 au 
 T_jup = 3.189 
[ 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 11.3   n/a MPO492787  
diameter diameter 35.887 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.328 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Clark, M. (2015) Minor Planet Bull. 42, 15-20.]
geometric albedo albedo 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3089 Oujianquan (1981 XK2)          Discovered 1981-Dec-03 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 XK2 = 1934 NF = 1944 MD = 1964 LA = 1974 ML = 1976 YU2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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