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2166 Handahl (1936 QB)
Classification: Main-belt Asteroid          SPK-ID: 2002166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2178425183966665 2.9173e-08  
a 2.346827544602427 6.5711e-09 au
q 1.835588722043569 6.7505e-08 au
i 5.135803221258014 3.6477e-06 deg
node 163.8195354655022 3.5041e-05 deg
peri 136.6586830426189 3.593e-05 deg
M 129.0167684175514 8.222e-06 deg
tp 2458529.887074520573
2.9515e-05 TDB
period 1313.167700994329
n .2741462493536875 1.1514e-09 deg/d
Q 2.858066367161285 8.0026e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2716  
   data-arc span      33264 days (91.07 yr)  
   first obs. used      1929-10-05  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43477  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:12:02  

Additional Information
 Earth MOID = .824324 au 
 Jupiter MOID = 2.38954 au 
 T_jup = 3.523 
[ 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 13.0   n/a MPO502174  
diameter diameter 4.327 km 0.753 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 7.2263 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2015)]
[Garceran, A.C.; Aznar, A.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 92-97.]
[Oey, J.; Williams, H.; Groom, R.; Pray, D.; Benishek, V. (2017) Minor Planet Bull. 44, 193-199.]
geometric albedo albedo 0.716   0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

2166 Handahl           Discovered 1936 Aug. 13 by G. Neujmin at Simeis.
Named by D. W. E. Green, who found the identifications for this planet, in honor of his mother, Violet Handahl Green.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5285Last Updated: 2007-10-23

[ show close-approach data ]
Alternate Designations
 1936 QB = 1929 TR = 1943 MD = 1972 RL = 1979 MJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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