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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1093222084947835 5.3217e-08  
a 3.14628234162846 2.4936e-08 AU
q 2.802323807493497 1.6689e-07 AU
i .9677552994791599 5.9668e-06 deg
node 24.76884264421337 0.00026424 deg
peri 188.4673677953038 0.00026579 deg
M 189.6779289352169 2.3348e-05 deg
tp 2457964.913752338907
(2017-Jul-30.41375234)
0.00013588 JED
period 2038.426075208721
5.58
2.4233e-05
6.635e-08
d
yr
n .1766068460261128 2.0995e-09 deg/d
Q 3.490240875763422 2.7662e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1636  
   data-arc span      18723 days (51.26 yr)  
   first obs. used      1963-10-14  
   last obs. used      2015-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51115  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 12:58:33  

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-Feb); 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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