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1462 Zamenhof (1938 CA)
Classification: Main-belt Asteroid          SPK-ID: 2001462
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1093222076718609 5.3158e-08  
a 3.14628233821546 2.4719e-08 AU
q 2.802323807042761 1.6681e-07 AU
i .9677552456864179 5.9494e-06 deg
node 24.76884572744228 0.00026136 deg
peri 188.4673674571945 0.00026287 deg
M 189.6779272849215 2.3299e-05 deg
tp 2457964.913760114112
(2017-Jul-30.41376011)
0.0001357 JED
period 2038.426071891879
5.58
2.4023e-05
6.577e-08
d
yr
n .1766068463134801 2.0813e-09 deg/d
Q 3.490240869388159 2.7422e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1741  
   data-arc span      18774 days (51.40 yr)  
   first obs. used      1963-10-14  
   last obs. used      2015-03-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50579  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:05:34  

Additional Information
 Earth MOID = 1.79758 AU 
 T_jup = 3.199 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.2 mag n/a MPO279529  
diameter diameter 25.82 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 10.4 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Menke, J.; Cooney, W.; Gross, J.; Terrell, D. (2008) Minor Planet Bul. 35, 155-160.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1268   0.019 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6

1462 Zamenhof (1938 CA)          Discovered 1938-Feb-06 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1938 CA = 1963 TS = 1964 VF2 = 1969 TU5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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