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2109 Dhotel (1950 TH2)
Classification: Main-belt Asteroid          SPK-ID: 2002109
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 .2612564359386712 3.8703e-08  
a 2.691346251550818 9.7257e-09 au
q 1.988214721993748 1.0669e-07 au
i 8.074861453642255 4.2784e-06 deg
node 162.1293829944013 2.4279e-05 deg
peri 192.1969336386998 2.5011e-05 deg
M 292.3739807379853 7.9672e-06 deg
tp 2459303.445225558916
(2021-Mar-29.94522556)
3.6669e-05 TDB
period 1612.697041632148
4.42
8.7417e-06
2.393e-08
d
yr
n .2232285362386837 1.21e-09 deg/d
Q 3.394477781107887 1.2267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2699  
   data-arc span      32096 days (87.87 yr)  
   first obs. used      1932-08-04  
   last obs. used      2020-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4575  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:41:06  

Additional Information
 Earth MOID = .983923 au 
 Jupiter MOID = 2.04925 au 
 T_jup = 3.308 
[ 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 12.0   n/a MPO473793  
diameter diameter 20.408 km 0.444 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 32. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Binzel, R.P.; Mulholland, J.D. (1983) Icarus 56, 519-533.]
geometric albedo albedo 0.051   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2109 Dhotel (1950 TH2)          Discovered 1950-Oct-13 by Arend, S. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1950 TH2 = 1932 PA = 1941 SH2 = 1963 RA = 1972 RW3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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