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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1091377200353104 5.8212e-08  
a 3.146837456331527 2.3396e-08 AU
q 2.803398791025789 1.8207e-07 AU
i .9677477869464279 6.3887e-06 deg
node 24.76959229838182 0.00032302 deg
peri 188.5075718970376 0.00032464 deg
M 154.3133489211241 2.6549e-05 deg
tp 2455926.501094311938
(2011-Dec-31.00109431)
0.00014943 JED
period 2038.965573927941
5.58
2.2739e-05
6.226e-08
d
yr
n .1765601168569424 1.969e-09 deg/d
Q 3.490276121637266 2.595e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1497  
   data-arc span      27733 days (75.93 yr)  
   first obs. used      1938-01-07  
   last obs. used      2013-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55231  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Dec-19 20:50:33  

Additional Information
 Earth MOID = 1.79747 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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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