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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08637859862571508 2.506e-08  
a 2.225547071929836 5.8096e-09 au
q 2.033307434680973 5.4894e-08 au
i 1.61601516680467 3.2074e-06 deg
node 130.9961673413058 0.00011877 deg
peri 129.8003958945385 0.00012096 deg
M 125.1971447468435 2.354e-05 deg
tp 2458178.759287817619
(2018-Mar-01.25928782)
7.912e-05 TDB
period 1212.700630614701
3.32
4.7485e-06
1.3e-08
d
yr
n .2968580958167071 1.1624e-09 deg/d
Q 2.417786709178699 6.3115e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2794  
   data-arc span      24513 days (67.11 yr)  
   first obs. used      1952-10-17  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45979  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:35:01  

Additional Information
 Earth MOID = 1.01791 au 
 Jupiter MOID = 2.61378 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 12.75   n/a PDS3 (MPC 17265)  
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-January); 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

[ show close-approach data ]
Alternate Designations
 1981 JK = 1952 UP1 = 1961 GB = 1961 JE = 1964 CF = 1972 TF8 = 1974 EN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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