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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548948126497873 2.2882e-08  
a 2.698370820930694 7.4361e-09 au
q 2.280407178162982 6.2667e-08 au
i 6.090595942791526 4.6979e-07 deg
node 296.2803201860432 1.8786e-06 deg
peri 296.835216018365 5.24e-06 deg
M 57.79874936303702 3.6618e-06 deg
tp 2459136.563770293755
(2020-Oct-14.06377029)
1.6221e-05 TDB
period 1619.015008551238
4.43
6.6924e-06
1.832e-08
d
yr
n .2223574198500748 9.1915e-10 deg/d
Q 3.116334463698407 8.5879e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3539  
   data-arc span      32104 days (87.90 yr)  
   first obs. used      1933-09-16  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39171  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:44:12  

Additional Information
 Earth MOID = 1.27742 au 
 Jupiter MOID = 1.93488 au 
 T_jup = 3.343 
[ 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 10.85   n/a MPO636083  
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 35.54 h n/a LCDB (Rev. 2020-October); 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:
[Polakis, T. (2020) Minor Planet Bull. 47, 314-321.]
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2036-Jun-01 17:23 < 00:01 Jupiter 1.96195345451239 1.96195323788962 1.96195367113515 2.38048102710213 2.19162994142995 2464846.224001663 0.281909571927794 18.9087961708229 1.98735980347182 89.1136593263877 10630702.1291807 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 07:45:44 2021-Aug-25 07:45
2071-Sep-12 10:12 < 00:01 Jupiter 1.92918787538208 1.92918768475347 1.92918806601079 2.14360706153101 1.92793625367876 2477731.924744127 0.717520283025864 35.8877502138964 1.15857403982357 -76.943346317854 8751736.60643308 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 07:45:44 2021-Aug-25 07:45
2106-Dec-23 22:04 00:01 Jupiter 1.9279534309702 1.9279532786185 1.92795358332178 2.02316914402382 1.79291330090581 2490617.419465563 1.1782551241564 44.6411640354305 3.29735598849065 -72.9953459618849 6832660.58652423 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 07:45:44 2021-Aug-25 07:45
2142-Apr-05 02:48 00:02 Jupiter 1.94495010283758 1.94494979022504 1.94495041545057 2.03458390251161 1.8079090152019 2503503.616725462 1.664894785754 60.259890461328 6.00386243868185 -85.884706222665 5937366.80734695 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 07:45:44 2021-Aug-25 07:45
2177-Jul-11 13:20 00:02 Jupiter 1.98868750199072 1.98868683963077 1.98868816435247 2.22781523297969 2.02763901566827 2516385.055769115 2.16151322910204 111.996322862164 3.7801967433798 88.8624292262415 7227338.09400737 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 07:45:44 2021-Aug-25 07:45

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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