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3317 Paris (1984 KF)
Classification: Jupiter Trojan          SPK-ID: 2003317
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127853955746452 4.9244e-08  
a 5.220365497812899 7.3884e-08 au
q 4.552921118475224 2.9321e-07 au
i 27.87119384256772 4.2829e-06 deg
node 135.908509602325 8.8421e-06 deg
peri 150.217215650142 1.9695e-05 deg
M 328.031206807067 1.89e-05 deg
tp 2459587.377554804570
(2022-Jan-07.87755480)
0.00022928 TDB
period 4356.621123891316
11.93
9.2489e-05
2.532e-07
d
yr
n .08263284544662206 1.7543e-09 deg/d
Q 5.887809877150573 8.333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2711  
   data-arc span      20969 days (57.41 yr)  
   first obs. used      1963-08-21  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34765  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:05:56  

Additional Information
 Earth MOID = 3.55951 au 
 Jupiter MOID = .405471 au 
 T_jup = 2.753 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456931.5 (2014-Oct-01.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .12640670018798 4.9274e-08  
q 4.563089279362892 2.9454e-07 au
tp 2455235.246822354243
(2010-Feb-07.74682235)
0.00024226 TDB
node 135.8977011364242 8.8451e-06 deg
peri 150.4831986202304 1.9861e-05 deg
i 27.86021033175344 4.281e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2711  
   data-arc span      20969 days (57.41 yr)  
   first obs. used      1963-08-21  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34765  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:05:56  

Additional Information
 Jupiter MOID = .405471 au 
 T_jup = 2.753 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.427944092915688E-15 -1.422623143503264E-14 -7.689610212401999E-13 1.739330374046659E-16 -3.560663230474179E-14 -8.725185635026995E-16
q -1.422623143503264E-14 8.675653449804924E-14 -8.876337796873869E-13 6.484504367454908E-15 -5.572931693644741E-14 4.459648939220142E-15
tp -7.689610212401999E-13 -8.876337796873869E-13 5.868960677676547E-8 -1.20984436097812E-11 4.321223731031746E-9 1.369627177648273E-11
node 1.739330374046659E-16 6.484504367454908E-15 -1.20984436097812E-11 7.823666206435753E-11 -6.948928779177791E-11 -4.215371203359865E-13
peri -3.560663230474179E-14 -5.572931693644741E-14 4.321223731031746E-9 -6.948928779177791E-11 3.94440897377026E-10 1.283761568200967E-12
i -8.725185635026995E-16 4.459648939220142E-15 1.369627177648273E-11 -4.215371203359865E-13 1.283761568200967E-12 1.832660891007378E-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 8.54   n/a E2021B10  
diameter diameter 118.790 km 1.175 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 7.0812 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 265-270.]
[Stephens, R.D.; Coley, D.R. (2017) Minor Planet Bull. 44, 252-257.]
[Stephens, R. D.; Warner, B. D. (2019) MPB 46, 315-317.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Franco, L.; Marchini, A.; Scarfi, G.; Papini, R.; et al. (2020) Minor Planet Bull. 47, 270-272.]
[Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 285-289.]
geometric albedo albedo 0.055   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
SMASSII spectral type spec_B T   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3317 Paris (1984 KF)          Discovered 1984-May-26 by Shoemaker, C. and Shoemaker, E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1984 KF = 1963 QD = 1982 BN3 = 1982 DC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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