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2411 Zellner (1981 JK)
Classification: Main-belt Asteroid          SPK-ID: 2002411
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 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08630554195640448 2.4792e-08  
a 2.225656155479761 5.6793e-09 au
q 2.033569694772473 5.4457e-08 au
i 1.616132865532883 3.1387e-06 deg
node 130.9913424624436 0.00011368 deg
peri 129.9507834488195 0.0001158 deg
M 243.763224574039 2.3062e-05 deg
tp 2459392.085484979690
(2021-Jun-26.58548498)
7.8e-05 TDB
period 1212.789791149033
3.32
4.6421e-06
1.271e-08
d
yr
n .296836271732569 1.1362e-09 deg/d
Q 2.41774261618705 6.1694e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2990  
   data-arc span      24663 days (67.52 yr)  
   first obs. used      1952-10-17  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44667  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:39:34  

Additional Information
 Earth MOID = 1.01852 au 
 Jupiter MOID = 2.61381 au 
 T_jup = 3.641 
[ 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 12.7   n/a MPO502176  
diameter diameter 8.050 km 0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.975 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Marchini, A.; Ballini, E.; Chianese, E.; Maggioni, E.; et al. (2017) Minor Planet Bull. 44, 274-276.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2017) http://www.asu.cas.cz/~ppravec/neo.htm]
[Benishek, V. (2018) Minor Planet Bull. 45, 82-91.]
geometric albedo albedo 0.217   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.926   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=23.29 deg.
U-B UB 0.551   0.054 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=23.29 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices

2411 Zellner           Discovered 1981 May 3 by E. Bowell at the Anderson Mesa station of the Lowell Observatory.
Named in honor of Benjamin H. Zellner, astronomer at the University of Arizona, Tucson. He brought to fruition the polarimetric-photometric method of albedo and diameter determination for asteroids. He has also helped define a taxonomic system for asteroids and has investigated in detail the distribution of the various taxonomic types in the main belt.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 6209Last Updated: 2006-03-21

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Alternate Designations
 1981 JK = 1952 UP1 = 1961 GB = 1961 JE = 1964 CF = 1972 TF8 = 1974 EN 
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