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1499 Pori (1938 UF)
Classification: Main-belt Asteroid          SPK-ID: 2001499
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870598330079458 3.5299e-08  
a 2.669607074246508 8.4796e-09 au
q 2.170230820741125 9.7987e-08 au
i 12.18056574202311 3.8183e-06 deg
node 239.6166381242849 1.6604e-05 deg
peri 74.81960448543947 1.9656e-05 deg
M 306.7459894061581 1.1516e-05 deg
tp 2459236.178118930978
(2021-Jan-21.67811893)
5.1442e-05 TDB
period 1593.196866659337
4.36
7.5908e-06
2.078e-08
d
yr
n .2259607758047245 1.0766e-09 deg/d
Q 3.168983327751891 1.0066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2555  
   data-arc span      28482 days (77.98 yr)  
   first obs. used      1942-08-11  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40843  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:35:56  

Additional Information
 Earth MOID = 1.19406 au 
 Jupiter MOID = 2.19494 au 
 T_jup = 3.325 
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Orbital Elements at Epoch 2456691.5 (2014-Feb-03.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1843386803659033 3.5153e-08  
q 2.180879021057982 9.7324e-08 au
tp 2456045.993231054263
(2012-Apr-28.49323105)
4.8088e-05 TDB
node 239.8033635072699 1.6572e-05 deg
peri 74.37874562692434 1.9772e-05 deg
i 12.18599892840946 3.8186e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2555  
   data-arc span      28482 days (77.98 yr)  
   first obs. used      1942-08-11  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40843  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:35:56  

Additional Information
 Jupiter MOID = 2.19494 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.235707634915664E-15 -3.414579480763196E-15 -1.882356315838726E-13 2.12727157167933E-15 -2.222012111791781E-14 -6.823359138665991E-16
q -3.414579480763196E-15 9.471894449602977E-15 5.535971197182903E-13 -5.134589960096788E-15 7.10160150226811E-14 1.601761268591936E-15
tp -1.882356315838726E-13 5.535971197182903E-13 2.312481387390455E-9 -3.139761232331825E-12 5.309286340363172E-10 2.495743638582375E-12
node 2.12727157167933E-15 -5.134589960096788E-15 -3.139761232331825E-12 2.746383587884773E-10 -2.68835722486384E-10 -4.226982862482922E-12
peri -2.222012111791781E-14 7.10160150226811E-14 5.309286340363172E-10 -2.68835722486384E-10 3.909398159586061E-10 4.696994688925241E-12
i -6.823359138665991E-16 1.601761268591936E-15 2.495743638582375E-12 -4.226982862482922E-12 4.696994688925241E-12 1.458207755760542E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.4   n/a MPO384761  
diameter diameter 14.896 km 0.348 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.3557 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D. (2004) Minor Planet Bull. 31, 4-6.]
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Benishek, V. (2018) Minor Planet Bull. 45, 187-189.]
geometric albedo albedo 0.240   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1499 Pori (1938 UF)          Discovered 1938-Oct-16 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1938 UF = 1951 RU1 = 1959 NA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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