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738 Alagasta (A913 AF)
Classification: Main-belt Asteroid          SPK-ID: 2000738
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 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05429165608029783 2.7599e-08  
a 3.035553404566781 9.5329e-09 au
q 2.870748183112664 8.0751e-08 au
i 3.534833623470484 3.1325e-06 deg
node 132.0989802939547 4.9822e-05 deg
peri 42.68752882158866 5.9046e-05 deg
M 46.43274859615596 3.1013e-05 deg
tp 2458751.340680866801
(2019-Sep-24.84068087)
0.00016641 TDB
period 1931.769227535617
5.29
9.0998e-06
2.491e-08
d
yr
n .186357663673552 8.7786e-10 deg/d
Q 3.200358626020897 1.005e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3528  
   data-arc span      39361 days (107.76 yr)  
   first obs. used      1913-01-07  
   last obs. used      2020-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43337  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:26:20  

Additional Information
 Earth MOID = 1.87667 au 
 Jupiter MOID = 1.76242 au 
 T_jup = 3.237 
[ 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 10.0   n/a MPO473772 IRAS observations used: 23
diameter diameter 62.79 km 1.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 23
rotation period rot_per 18.86 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Garceran, A.C.; Aznar, A.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 92-97.]
geometric albedo albedo 0.0398   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 23
B-V BV 0.763   0.057 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=1.57 deg.
Tholen spectral type spec_T CGSU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

738 Alagasta (A913 AF)          Discovered 1913-Jan-07 by Kaiser, F. at Heidelberg
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
1917-Jul-05 16:53 00:01 Jupiter 1.91338548739964 1.91338491885809 1.9133860559413 3.12809920538308 2.98322633785206 2421415.203465420 1.31331576911971 44.8652700528697 13.7261462829464 68.8989735277077 3344514.09822688 T 50 CATAB v2.0f-lin.ifort 2020-Nov-13 04:26:30 2020-Nov-13 04:26
1926-Oct-23 10:46 00:01 Jupiter 1.83798934205937 1.83798899728607 1.83798968683289 2.82587301662601 2.6577950427972 2424811.948339809 1.2153568832404 62.7146744446384 7.88825503348915 -82.257228223582 4695751.21314833 T 50 CATAB v2.0f-lin.ifort 2020-Nov-13 04:26:30 2020-Nov-13 04:26
1965-Mar-31 22:00 < 00:01 Jupiter 1.96462036336076 1.96461997403418 1.96462075268735 3.32360247550624 3.19124699658486 2438851.416441050 0.632824932314039 30.0316894078315 13.6685415171915 78.4817566821342 4010877.90139451 T 50 CATAB v2.0f-lin.ifort 2020-Nov-13 04:26:30 2020-Nov-13 04:26
1974-Jul-22 00:58 < 00:01 Jupiter 1.79845439852395 1.79845414969065 1.79845464735714 2.70328497798903 2.52305464190628 2442250.540258117 0.540791512166829 39.2420298090879 6.41464207825643 -89.3137203930529 4642125.02591377 T 50 CATAB v2.0f-lin.ifort 2020-Nov-13 04:26:30 2020-Nov-13 04:26
2022-Apr-16 21:20 < 00:01 Jupiter 1.77061385299139 1.77061357163016 1.77061413435251 2.61130996233259 2.42119473462593 2459686.389022321 0.238368451832391 32.1583877866993 6.61322488216134 -89.8300083578259 4222762.97240209 T 50 CATAB v2.0f-lin.ifort 2020-Nov-13 04:26:30 2020-Nov-13 04:26
2070-Jan-08 22:35 < 00:01 Jupiter 1.75353621719408 1.75353591481341 1.75353651957476 2.54894018968174 2.35181259857565 2477120.441233126 0.89601680788966 59.2211519957818 6.19272060963924 -87.9443849171963 4318679.45658349 T 50 CATAB v2.0f-lin.ifort 2020-Nov-13 04:26:30 2020-Nov-13 04:26
2117-Oct-03 04:21 00:02 Jupiter 1.75200456238851 1.75200428580721 1.75200483896991 2.52821067223928 2.32914813634335 2494553.681531800 1.60607519410372 95.1196062769137 5.44666598985345 -89.6969308093454 4359551.55017201 T 50 CATAB v2.0f-lin.ifort 2020-Nov-13 04:26:30 2020-Nov-13 04:26
2165-Jun-26 20:28 00:02 Jupiter 1.75774191254003 1.75774163758807 1.75774218749229 2.53287642638807 2.3348877691123 2511987.352433967 2.34384360329023 128.696875340498 4.74213497609943 88.1097038304727 4288777.84597478 T 50 CATAB v2.0f-lin.ifort 2020-Nov-13 04:26:30 2020-Nov-13 04:26

Alternate Designations
 A913 AF = 1950 BX1 = A908 CA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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