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1457 Ankara (1937 PA)
Classification: Main-belt Asteroid          SPK-ID: 2001457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544620066983851 3.7441e-08  
a 2.69744887226128 1.0444e-08 au
q 2.280795506485507 1.0026e-07 au
i 6.091522291305137 4.1918e-06 deg
node 296.2778844181842 4.0001e-05 deg
peri 296.5484601516129 4.2259e-05 deg
M 240.963480605839 1.4815e-05 deg
tp 2459135.564303761112
(2020-Oct-13.06430376)
6.7778e-05 TDB
period 1618.185329463261
4.43
9.3975e-06
2.573e-08
d
yr
n .2224714273731607 1.292e-09 deg/d
Q 3.114102238037053 1.2057e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2695  
   data-arc span      31276 days (85.63 yr)  
   first obs. used      1933-09-16  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42733  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:23:15  

Additional Information
 Earth MOID = 1.2775 au 
 Jupiter MOID = 1.93921 au 
 T_jup = 3.344 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.8   n/a MPO337257  
diameter diameter 17.834 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 31.8 h n/a LCDB (Rev. 2019-January); 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:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.320   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1457 Ankara (1937 PA)          Discovered 1937-Aug-03 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1937 PA = 1933 SA = 1934 XG = 1936 FL1 = 1943 YD = 1966 BG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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