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JPL Small-Body Database Browser
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279 Thule
Classification: Outer Main-belt Asteroid          SPK-ID: 2000279
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04013377479546391 3.3889e-08  
a 4.283402227463066 3.0225e-08 au
q 4.111493127107675 1.5617e-07 au
i 2.335777312180371 3.6768e-06 deg
node 71.96662832800817 9.6297e-05 deg
peri 23.16865852676496 0.00010773 deg
M 191.7157734461789 4.9619e-05 deg
tp 2460114.140098916930
(2023-Jun-18.64009892)
0.00045271 TDB
period 3238.036307792757
8.87
3.4273e-05
9.383e-08
d
yr
n .111178493932762 1.1768e-09 deg/d
Q 4.455311327818458 3.1438e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2869  
   data-arc span      47074 days (128.88 yr)  
   first obs. used      1890-12-12  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46738  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:51:40  

Additional Information
 Earth MOID = 3.12849 au 
 Jupiter MOID = .648434 au 
 T_jup = 3.026 
[ 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 8.57   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
diameter diameter 126.59 km 3.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
rotation period rot_per 23.896 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Bartczak, P.; et al. (2016) Proc. Polish Ast. Soc. 123, 51-57.]
geometric albedo albedo 0.0412   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
B-V BV 0.746   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=7.15, mean=11.21, max.=13.24) deg.
U-B UB 0.232   0.044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=9.92, mean=12.02, max.=13.24) deg.
Tholen spectral type spec_T D   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B X   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)

279 Thule          Discovered 1888-Oct-25 by Palisa, J. at Vienna
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
1912-Aug-12 01:11 00:03 Jupiter 1.21341393147088 1.21341346695543 1.2134143959862 2.31927431467428 1.99572922142519 2419626.549487958 3.34008546566963 56.9420082474998 13.0890098476204 89.9011106961814 3613187.71155223 T 46 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:53 2019-Nov-07 01:51
1946-Nov-19 13:19 00:03 Jupiter 1.20609031513526 1.20608992105178 1.20609070921867 2.17549184003935 1.82433251988421 2432144.054646880 2.90381377920059 66.76469027223 5.99591687391394 86.913741984279 3458356.00132213 T 46 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:53 2019-Nov-07 01:51
1981-Jun-25 20:47 00:02 Jupiter 1.15870496990084 1.1587045431503 1.15870539665118 2.01227234727663 1.60848504795203 2444781.365661585 1.73546367112196 72.9515655496719 11.0645620209801 -88.415584676473 2889842.45824726 T 46 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:53 2019-Nov-07 01:51
2016-Jul-07 14:59 < 00:01 Jupiter 1.15204748314858 1.15204704178812 1.15204792450878 1.99959493019673 1.58994191511406 2457577.124630727 0.583256106655613 62.9984313638994 11.4152464080425 -86.7946499407417 2857507.46321262 T 46 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:53 2019-Nov-07 01:51
2051-May-23 05:24 00:02 Jupiter 1.17810504971319 1.17810464208281 1.17810545734331 2.09492971403762 1.71778635154761 2470314.724776786 2.06176401577706 74.2682887329669 4.82948248484451 -86.5246584008419 3119035.8221533 T 46 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:53 2019-Nov-07 01:51
2085-Oct-21 13:31 00:03 Jupiter 1.2224771567465 1.22247670566119 1.2224776078318 2.34750192041002 2.0310139008445 2482885.063376540 2.92151086213517 66.7379694794002 8.20980545819121 -81.5435150922909 3370369.35203118 T 46 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:53 2019-Nov-07 01:51
2120-Feb-18 16:51 00:03 Jupiter 1.18767984167407 1.18767935825638 1.18768032509175 2.44554589023849 2.13409148780026 2495422.202118117 3.34036242985034 52.2653272865716 14.6180916387914 -79.2171486569871 4114709.59437103 T 46 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:53 2019-Nov-07 01:51
2154-Nov-28 11:22 00:03 Jupiter 1.14408399990934 1.14408349055955 1.144084509259 2.42592458191953 2.09866867458636 2508123.973416993 3.4016881020745 50.97603618657 15.3388293174097 89.2976479925101 3479734.88704968 T 46 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:53 2019-Nov-07 01:51
2190-Jan-31 11:30 00:04 Jupiter 1.13638525212231 1.13638477062456 1.1363857336202 2.44685512982101 2.12046427817124 2520971.978902401 4.08630640282267 65.8963109899447 11.9124570840275 84.5949556017469 3665575.51189658 T 46 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:53 2019-Nov-07 01:51

Alternate Designations
 1927 EC = 1954 FF = A920 GA = A923 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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