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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04316723837653265 1.9466e-08  
a 4.269397785116649 2.0679e-08 au
q 4.085099673202278 8.9909e-08 au
i 2.334314281761527 6.5416e-07 deg
node 71.9001458919751 2.4376e-05 deg
peri 25.3211321384946 3.5168e-05 deg
M 256.6046623827472 1.9044e-05 deg
tp 2460125.936900578304
(2023-Jun-30.43690058)
0.00017311 TDB
period 3222.169315230301
8.82
2.3411e-05
6.41e-08
d
yr
n .1117259724057267 8.1174e-10 deg/d
Q 4.45369589703102 2.1572e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3532  
   data-arc span      47521 days (130.11 yr)  
   first obs. used      1890-12-12  
   last obs. used      2021-01-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42978  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:37:59  

Additional Information
 Earth MOID = 3.10191 au 
 Jupiter MOID = .648552 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 8.53   n/a E2021B10 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. 2020-October); 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 01:14 00:02 Jupiter 1.21341363774798 1.21341334669012 1.21341392880584 2.3192736399445 1.9957283545744 2419626.551357109 1.89197532744531 17.2841109922869 7.60481068090045 -85.9357121398007 5629588.53768404 T 56 CATAB v2.0f-lin.ifort 2021-Apr-12 10:39:33 2021-Apr-12 10:39
1946-Nov-19 13:20 00:02 Jupiter 1.20609017229707 1.20608989964031 1.2060904449539 2.17549143327011 1.82433199135335 2432144.055872217 1.8268005772312 29.1496280513452 2.47529141845034 84.9128996565467 6078470.22028378 T 56 CATAB v2.0f-lin.ifort 2021-Apr-12 10:39:33 2021-Apr-12 10:39
1981-Jun-25 20:47 00:01 Jupiter 1.15870471246695 1.15870449112307 1.15870493381077 2.01227160924874 1.6084840261919 2444781.365979552 1.30685161722241 34.0611074493066 3.81513873903959 -84.9314207863606 6060457.08023932 T 56 CATAB v2.0f-lin.ifort 2021-Apr-12 10:39:33 2021-Apr-12 10:39
2016-Jul-07 14:59 < 00:01 Jupiter 1.15204710965881 1.15204688633453 1.15204733298309 1.99959397438741 1.58994056567477 2457577.124450637 0.218307321867104 19.4245060736399 2.78064287753154 -74.7110569290139 13296489.5831625 T 56 CATAB v2.0f-lin.ifort 2021-Apr-12 10:39:33 2021-Apr-12 10:39
2051-May-23 05:23 00:01 Jupiter 1.17810465047234 1.17810444226547 1.1781048586792 2.09492868910936 1.71778496206816 2470314.724485611 1.28053312202995 34.3969374348883 2.11476470514816 -85.7600406121673 6538269.7473378 T 56 CATAB v2.0f-lin.ifort 2021-Apr-12 10:39:33 2021-Apr-12 10:39
2085-Oct-21 13:30 00:02 Jupiter 1.22247689034311 1.22247659402662 1.2224771866596 2.34750121401718 2.03101301191763 2482885.062810877 1.64262293175525 27.4618025547583 4.70984548551917 -76.5297331748886 5212136.160128 T 56 CATAB v2.0f-lin.ifort 2021-Apr-12 10:39:33 2021-Apr-12 10:39
2120-Feb-18 16:49 00:02 Jupiter 1.18767965243241 1.18767935195085 1.18767995291397 2.44554545357686 2.13409093600969 2495422.200993103 1.62660942543041 18.3815736913669 5.91053891551341 -64.1200769677034 6461799.79181587 T 56 CATAB v2.0f-lin.ifort 2021-Apr-12 10:39:33 2021-Apr-12 10:39
2154-Nov-28 11:19 00:02 Jupiter 1.14408370938908 1.14408344901136 1.14408396976679 2.42592386495101 2.09866775818594 2508123.971654486 1.52162581077711 14.5868317699834 7.47980309942943 -87.7472094808547 6565743.09159618 T 56 CATAB v2.0f-lin.ifort 2021-Apr-12 10:39:33 2021-Apr-12 10:39
2190-Jan-31 11:27 00:02 Jupiter 1.13638487787613 1.13638463772347 1.13638511802879 2.44685412101969 2.1204630002695 2520971.976838784 2.1113157371052 24.9155391545601 5.42119654161452 82.2854761067224 6583058.17348751 T 56 CATAB v2.0f-lin.ifort 2021-Apr-12 10:39:33 2021-Apr-12 10:39

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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