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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1096899497572411 4.9165e-08  
a 3.14705440612677 2.2083e-08 au
q 2.801854166435421 1.5779e-07 au
i .967722913375503 5.4155e-06 deg
node 24.77513951542974 0.00025699 deg
peri 188.2367540729557 0.00025851 deg
M 295.9100057221387 2.3521e-05 deg
tp 2457963.530016562093
(2017-Jul-29.03001656)
0.00013465 JED
period 2039.176433621531
5.58
2.1463e-05
5.876e-08
d
yr
n .1765418597745602 1.8582e-09 deg/d
Q 3.49225464581812 2.4505e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1908  
   data-arc span      19181 days (52.51 yr)  
   first obs. used      1963-10-14  
   last obs. used      2016-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49993  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:34:06  

Additional Information
 Earth MOID = 1.79533 au 
 Jupiter MOID = 1.47486 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. 2016-February); 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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