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279 Thule (A888 UA)
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04251975400942613 2.9548e-08  
a 4.272880795995857 2.8408e-08 au
q 4.091198955638512 1.4243e-07 au
i 2.334380684324832 3.069e-06 deg
node 71.91999977218414 9.6143e-05 deg
peri 24.48354456943632 0.00010554 deg
M 235.0557993547218 4.603e-05 deg
tp 2460120.178127983658
(2023-Jun-24.67812798)
0.00041877 TDB
period 3226.113128839724
8.83
3.2173e-05
8.808e-08
d
yr
n .1115893912032386 1.1129e-09 deg/d
Q 4.454562636353201 2.9616e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3328  
   data-arc span      47438 days (129.88 yr)  
   first obs. used      1890-12-12  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:24  

Additional Information
 Earth MOID = 3.10819 au 
 Jupiter MOID = .64929 au 
 T_jup = 3.027 
[ 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 8.5   n/a MPO492751 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-August); 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 (A888 UA)          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 1.21341388075553 1.21341346506838 1.2134142964426 2.31927398636537 1.99572882527233 2419626.549309673 3.25988914053758 55.7735239894088 11.9742276811884 89.9587226880128 4037720.24879969 T 51 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:34 2020-Nov-13 04:31
1946-Nov-19 13:18 00:03 Jupiter 1.20609022010788 1.2060898262188 1.2060906139969 2.17549148325771 1.82433206409639 2432144.054493284 2.51307122279529 59.473806281197 5.46826415999918 87.6415336355215 3563089.11153162 T 51 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:34 2020-Nov-13 04:31
1981-Jun-25 20:46 00:01 Jupiter 1.15870491047028 1.15870452834893 1.15870529259157 2.01227221244394 1.60848485596152 2444781.365588637 1.41507124979305 63.924326408581 10.4363899200471 -87.0707408728049 3352505.43720662 T 51 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:34 2020-Nov-13 04:31
2016-Jul-07 14:59 < 00:01 Jupiter 1.15204745776129 1.15204703791598 1.15204787760641 1.99959491333125 1.58994188371279 2457577.124397135 0.558375901324576 54.7559967722152 11.2428408250947 -86.4631642467184 3019584.59964803 T 51 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:34 2020-Nov-13 04:31
2051-May-23 05:23 00:02 Jupiter 1.17810503574431 1.1781046348812 1.17810543660722 2.09492984830742 1.7177865103339 2470314.724235755 2.04474109465346 69.2546920397218 4.59759632424089 -86.6859882551261 3147247.83547082 T 51 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:34 2020-Nov-13 04:31
2085-Oct-21 13:30 00:03 Jupiter 1.22247708051824 1.22247667240121 1.22247748863549 2.34750193539357 2.0310138968905 2482885.062745875 2.82639309902267 62.0493041240772 7.12814367208547 -80.3095473933597 4168799.06660128 T 51 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:34 2020-Nov-13 04:31
2120-Feb-18 16:50 00:03 Jupiter 1.18767973687768 1.18767925988952 1.18768021386583 2.44554568342677 2.13409122131901 2495422.201592293 3.0696941824806 51.2816351615268 14.1505747962355 -79.8564095345335 4125812.54322762 T 51 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:34 2020-Nov-13 04:31
2154-Nov-28 11:21 00:03 Jupiter 1.14408394667383 1.14408347469987 1.14408441864772 2.42592442562351 2.09866847750347 2508123.972987951 3.33448107120768 49.5668098040791 14.3433844977313 88.8220493866707 3817642.36963662 T 51 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:34 2020-Nov-13 04:31
2190-Jan-31 11:29 00:04 Jupiter 1.13638522808464 1.13638475817116 1.13638569799831 2.4468550625591 2.12046419312068 2520971.978328928 4.05936989302073 63.6722398351079 11.311429675195 83.7328864163701 3943746.42344044 T 51 CATAB v2.0f-lin.ifort 2020-Nov-13 04:31:34 2020-Nov-13 04:31

Alternate Designations
 A888 UA = 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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