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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2614086755898923 4.1196e-08  
a 2.689681561514571 1.0287e-08 au
q 1.986575466760493 1.1256e-07 au
i 8.07603271090816 4.6984e-06 deg
node 162.1517415853571 2.4689e-05 deg
peri 192.3206950042464 2.5447e-05 deg
M 202.8615079774132 7.8373e-06 deg
tp 2459303.782491961607
(2021-Mar-30.28249196)
3.7333e-05 TDB
period 1611.201010315071
4.41
9.2429e-06
2.531e-08
d
yr
n .2234358082543666 1.2818e-09 deg/d
Q 3.392787656268649 1.2976e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2423  
   data-arc span      31691 days (86.77 yr)  
   first obs. used      1932-08-04  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45738  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:30:25  

Additional Information
 Earth MOID = .981438 au 
 Jupiter MOID = 2.0476 au 
 T_jup = 3.309 
[ 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 11.91   n/a PDS3 (MPC 17264)  
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-January); 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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