Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1093222058203992 5.3131e-08  
a 3.14628233733586 2.4705e-08 AU
q 2.802323812084543 1.6674e-07 AU
i .9677552238436788 5.9456e-06 deg
node 24.76884671133941 0.00026131 deg
peri 188.4673668078107 0.00026282 deg
M 189.6779272218613 2.3299e-05 deg
tp 2457964.913760066750
(2017-Jul-30.41376007)
0.0001357 JED
period 2038.426071037062
5.58
2.4009e-05
6.573e-08
d
yr
n .1766068463875405 2.0801e-09 deg/d
Q 3.490240862587178 2.7406e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1745  
   data-arc span      18933 days (51.84 yr)  
   first obs. used      1963-10-14  
   last obs. used      2015-08-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50615  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:01:24  

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-July); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Sep-04 03:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin