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JPL Small-Body Database Browser
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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 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05429165133315998 2.8519e-08  
a 3.035553405993032 9.8633e-09 au
q 2.870748198871672 8.4298e-08 au
i 3.534832347273288 3.3778e-06 deg
node 132.0989776071283 4.9885e-05 deg
peri 42.68753455970342 5.9505e-05 deg
M 46.43274465357004 3.2126e-05 deg
tp 2458751.340701847217
(2019-Sep-24.84070185)
0.0001723 TDB
period 1931.769228897077
5.29
9.4152e-06
2.578e-08
d
yr
n .1863576635422121 9.0829e-10 deg/d
Q 3.200358613114392 1.0399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3209  
   data-arc span      39192 days (107.30 yr)  
   first obs. used      1913-01-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45156  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:11:42  

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 1.9133854503998 1.91338485558168 1.91338604521791 3.12809912372003 2.98322624935376 2421415.203422973 1.36469698481251 47.4105355888478 14.3178379616489 68.9852406375188 3233485.03425499 T 47 CATAB v2.0f-lin.ifort 2020-May-20 01:12:02 2020-May-20 01:12
1926-Oct-23 10:46 00:01 Jupiter 1.83798937393878 1.83798898896991 1.83798975890797 2.82587304884139 2.65779508005732 2424811.948307130 1.25740173625795 64.6609536605916 8.5085563603554 -81.5485150138994 4301548.06561032 T 47 CATAB v2.0f-lin.ifort 2020-May-20 01:12:02 2020-May-20 01:12
1965-Mar-31 22:00 < 00:01 Jupiter 1.96462033612818 1.96461992735416 1.96462074490219 3.3236023278875 3.19124684097101 2438851.416408345 0.658035413090772 32.2804938199434 14.344936374479 78.4534362025066 3863693.38182631 T 47 CATAB v2.0f-lin.ifort 2020-May-20 01:12:02 2020-May-20 01:12
1974-Jul-22 00:58 < 00:01 Jupiter 1.79845441826081 1.79845414893402 1.79845468758761 2.70328498844507 2.52305465515778 2442250.540246527 0.557454610655627 40.1103447413287 6.9070030013842 -88.5335864910427 4330520.03918499 T 47 CATAB v2.0f-lin.ifort 2020-May-20 01:12:02 2020-May-20 01:12
2022-Apr-16 21:20 < 00:01 Jupiter 1.77061386385668 1.77061357657183 1.77061415114143 2.61130994120983 2.42119471305703 2459686.389041804 0.245429758562631 32.5594937603295 6.72788997980766 -89.7414786216736 4079418.98051959 T 47 CATAB v2.0f-lin.ifort 2020-May-20 01:12:02 2020-May-20 01:12
2070-Jan-08 22:35 < 00:01 Jupiter 1.75353622304239 1.75353591821674 1.75353652786804 2.54894019442392 2.35181260440032 2477120.441264194 0.93162008349524 60.866451317054 6.2488541017044 -88.0766690166332 4139911.89769029 T 47 CATAB v2.0f-lin.ifort 2020-May-20 01:12:02 2020-May-20 01:12
2117-Oct-03 04:21 00:02 Jupiter 1.7520045680868 1.75200428787355 1.75200484830014 2.52821068511118 2.32914815099047 2494553.681596488 1.66930586457403 98.2267128809123 5.49488573312057 -89.8005941701458 4204285.32060205 T 47 CATAB v2.0f-lin.ifort 2020-May-20 01:12:02 2020-May-20 01:12
2165-Jun-26 20:28 00:02 Jupiter 1.75774192467324 1.75774163814201 1.75774221120488 2.53287647169044 2.33488781968073 2511987.352524130 2.43487580128045 133.11765132228 4.79181741502667 88.0341310082476 4182110.67323207 T 47 CATAB v2.0f-lin.ifort 2020-May-20 01:12:02 2020-May-20 01:12

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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