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213900 (2003 UN34)
Classification: Main-belt Asteroid          SPK-ID: 2213900
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04868759404738076 5.3785e-08  
a 2.369860113782758 1.6002e-08 au
q 2.254477326613823 1.2204e-07 au
i 6.910173849481973 8.1054e-06 deg
node 218.6934745196453 3.9017e-05 deg
peri 242.413933403588 9.1106e-05 deg
M 180.672079843116 8.2532e-05 deg
tp 2459864.285719738564
(2022-Oct-11.78571974)
0.0003074 TDB
period 1332.546872215034
3.65
1.3497e-05
3.695e-08
d
yr
n .2701593523697877 2.7363e-09 deg/d
Q 2.485242900951692 1.6781e-08 au
  Orbit Determination Parameters
   # obs. used (total)      234  
   data-arc span      8599 days (23.54 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45831  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:44:33  

Additional Information
 Earth MOID = 1.28029 au 
 Jupiter MOID = 2.59289 au 
 T_jup = 3.534 
[ 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 17.23   n/a E2021B55  
rotation period rot_per 4.90 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]

213900 (2003 UN34)          Discovered 2003-Oct-17 by Spacewatch at Kitt Peak
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

Alternate Designations
 2003 UN34 = 1996 XH13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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