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JPL Small-Body Database Browser
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1708 Polit (1929 XA)
Classification: Main-belt Asteroid          SPK-ID: 2001708
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3076555640054671 3.8976e-08  
a 2.912038588646417 8.4725e-09 au
q 2.016133714250719 1.1362e-07 au
i 6.04414500157701 3.7565e-06 deg
node 192.2028209342984 4.3323e-05 deg
peri 248.8529891357095 4.3901e-05 deg
M 51.9173090686381 7.2223e-06 deg
tp 2458738.739694375103
(2019-Sep-12.23969438)
3.627e-05 TDB
period 1815.073079006846
4.97
7.9214e-06
2.169e-08
d
yr
n .1983391215283637 8.656e-10 deg/d
Q 3.807943463042115 1.1079e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2523  
   data-arc span      33024 days (90.41 yr)  
   first obs. used      1929-11-28  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43542  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:28:42  

Additional Information
 Earth MOID = 1.04105 au 
 Jupiter MOID = 1.52807 au 
 T_jup = 3.203 
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Orbital Elements at Epoch 2456633.5 (2013-Dec-07.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3066084137608542 3.9305e-08  
q 2.019932861136294 1.1465e-07 au
tp 2456925.436088331025
(2014-Sep-24.93608833)
3.6412e-05 TDB
node 192.2450969571245 4.3368e-05 deg
peri 249.1597099168405 4.3942e-05 deg
i 6.03851188593473 3.7548e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2523  
   data-arc span      33024 days (90.41 yr)  
   first obs. used      1929-11-28  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43542  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:28:42  

Additional Information
 Jupiter MOID = 1.52807 au 
 T_jup = 3.203 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.544920314865744E-15 -4.50017640118578E-15 8.18711983062336E-13 -6.432968299171262E-15 1.355324273371011E-13 -5.100867741911657E-15
q -4.50017640118578E-15 1.314375627613089E-14 -2.418669094850998E-12 9.829486322685313E-15 -3.952985673653789E-13 1.60947572887237E-14
tp 8.18711983062336E-13 -2.418669094850998E-12 1.32580172411799E-9 1.031232411367283E-11 2.810819620344802E-10 -6.8045710759325E-12
node -6.432968299171262E-15 9.829486322685313E-15 1.031232411367283E-11 1.880816022544315E-9 -1.868622363995949E-9 -5.909081159271012E-11
peri 1.355324273371011E-13 -3.952985673653789E-13 2.810819620344802E-10 -1.868622363995949E-9 1.930941699689719E-9 5.755215040101841E-11
i -5.100867741911657E-15 1.60947572887237E-14 -6.8045710759325E-12 -5.909081159271012E-11 5.755215040101841E-11 1.409839197033506E-11

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 11.8   n/a MPO502169  
diameter diameter 28.706 km 0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.520 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Clark, M. (2011) Minor Planet Bull. 38, 187-189.]
[Clark, M. (2015) Minor Planet Bull. 42, 163-166.]
[Clark, M. (2016) Minor Planet Bull. 43, 80-86.]
geometric albedo albedo 0.042   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1708 Polit           Discovered 1929 Nov. 30 by J. Comas Sola at Barcelona.
Named in memory of Isidre Polit (1880-1958), second director of the astronomical section of the Fabra Observatory and an assiduous observer of minor planets and comets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5357Last Updated: 2006-03-21

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Alternate Designations
 1929 XA = 1934 XF = 1939 YB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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