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659 Nestor (A908 FE)
Classification: Jupiter Trojan          SPK-ID: 2000659
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1173680977402157 2.5957e-08  
a 5.164616727490295 5.442e-08 au
q 4.558455486627461 1.53e-07 au
i 4.522582664953778 7.3413e-07 deg
node 350.7389578916118 2.9784e-06 deg
peri 343.5860243817363 8.8128e-06 deg
M 31.59790448595613 9.779e-06 deg
tp 2458824.219810241044
(2019-Dec-06.71981024)
0.00011847 TDB
period 4287.020627378329
11.74
6.7759e-05
1.855e-07
d
yr
n .08397440350553043 1.3273e-09 deg/d
Q 5.770777968353129 6.0808e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3155  
   data-arc span      41234 days (112.89 yr)  
   first obs. used      1908-03-23  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42032  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:15:08  

Additional Information
 Earth MOID = 3.54702 au 
 Jupiter MOID = .308583 au 
 T_jup = 2.980 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456920.5 (2014-Sep-20.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1150374187343915 2.5701e-08  
q 4.589638212891849 1.5125e-07 au
tp 2458814.261084305276
(2019-Nov-26.76108431)
0.00012157 TDB
node 350.8663301355465 2.9778e-06 deg
peri 341.691056072745 8.9629e-06 deg
i 4.522475465026352 7.3402e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3155  
   data-arc span      41234 days (112.89 yr)  
   first obs. used      1908-03-23  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42032  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:15:08  

Additional Information
 Jupiter MOID = .308583 au 
 T_jup = 2.980 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.605281457615085E-16 -3.691357641217177E-15 1.054695916904524E-12 3.790084284834638E-14 8.501154470264225E-14 9.224821275534592E-15
q -3.691357641217177E-15 2.287563878178394E-14 -7.369351364816167E-12 -2.072115953909781E-13 -6.68962913710537E-13 -5.011034200293181E-14
tp 1.054695916904524E-12 -7.369351364816167E-12 1.478022425019806E-8 1.491290668185896E-10 1.027024407934759E-9 3.397695094508911E-11
node 3.790084284834638E-14 -2.072115953909781E-13 1.491290668185896E-10 8.867002919841602E-12 5.154471042827305E-12 1.861929012815332E-12
peri 8.501154470264225E-14 -6.68962913710537E-13 1.027024407934759E-9 5.154471042827305E-12 8.033428234427403E-11 1.293079645763871E-12
i 9.224821275534592E-15 -5.011034200293181E-14 3.397695094508911E-11 1.861929012815332E-12 1.293079645763871E-12 5.387868866838598E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.71   n/a E2021B10 IRAS observations used: 16
diameter diameter 112.320 km 1.850 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 15.98 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.035   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
B-V BV 0.719   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.03 deg.
U-B UB 0.249   0.058 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.03 deg.
Tholen spectral type spec_T XC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

659 Nestor (A908 FE)          Discovered 1908-Mar-23 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A908 FE = A914 WF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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