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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05451970336344764 3.0647e-08  
a 3.036066203810441 1.0907e-08 au
q 2.870540774986907 9.2224e-08 au
i 3.534661530688243 3.7419e-06 deg
node 132.0977035094566 5.0618e-05 deg
peri 42.46305116118391 6.1276e-05 deg
M 332.0977705145815 3.4954e-05 deg
tp 2458750.262019782332
(2019-Sep-23.76201978)
0.00018778 TDB
period 1932.258751932879
5.29
1.0412e-05
2.851e-08
d
yr
n .186310451247735 1.004e-09 deg/d
Q 3.201591632633975 1.1502e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2890  
   data-arc span      38841 days (106.34 yr)  
   first obs. used      1913-01-07  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46789  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:12:58  

Additional Information
 Earth MOID = 1.87697 au 
 Jupiter MOID = 1.76268 au 
 T_jup = 3.236 
[ 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 10.13   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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-January); 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 1.91338514873378 1.91338448769769 1.91338580976998 3.12809774098431 2.98322477607353 2421415.203137590 1.48911716717299 52.4733514031763 15.6650557084262 68.522073432737 2988080.83272752 T 44 CATAB v2.0e-lin.ifort 2019-May-29 19:13:09 2019-May-29 19:13
1926-Oct-23 10:45 00:01 Jupiter 1.83798963230866 1.83798916644324 1.8379900981745 2.82587414772874 2.657796272812 2424811.948052634 1.36328017784435 69.7983839501051 9.58536219695057 -80.2771391475438 3726900.18870796 T 44 CATAB v2.0e-lin.ifort 2019-May-29 19:13:09 2019-May-29 19:13
1965-Mar-31 21:59 < 00:01 Jupiter 1.96462007615578 1.96461961888418 1.96462053342727 3.32360118030138 3.19124562791186 2438851.416272910 0.718282214265958 35.7947822319813 16.0234038238697 77.797400257976 3518831.18686515 T 44 CATAB v2.0e-lin.ifort 2019-May-29 19:13:09 2019-May-29 19:13
1974-Jul-22 00:58 < 00:01 Jupiter 1.79845458741721 1.79845427500901 1.79845489982531 2.7032857491255 2.52305548773347 2442250.540121834 0.600819074810682 42.7295831628379 7.76470785443797 -87.0760026705374 3831625.34138378 T 44 CATAB v2.0e-lin.ifort 2019-May-29 19:13:09 2019-May-29 19:13
2022-Apr-16 21:20 < 00:01 Jupiter 1.77061396404697 1.77061366056225 1.7706142675317 2.61131045209029 2.42119527523248 2459686.389044852 0.261710713968956 33.9943302908367 6.97729567033164 -89.6147654434637 3802531.59189427 T 44 CATAB v2.0e-lin.ifort 2019-May-29 19:13:09 2019-May-29 19:13
2070-Jan-08 22:36 00:01 Jupiter 1.75353627757405 1.75353596340357 1.75353659174453 2.54894050914383 2.35181295188709 2477120.441403568 1.01612318917976 65.1259563450626 6.39953468450785 -88.3171337135052 3850806.17261527 T 44 CATAB v2.0e-lin.ifort 2019-May-29 19:13:09 2019-May-29 19:13
2117-Oct-03 04:22 00:02 Jupiter 1.75200460131313 1.75200431081473 1.75200489181153 2.52821090017275 2.32914838836895 2494553.681847334 1.8207536265613 105.966072002569 5.642037632922 -89.9676502962741 3955445.48477364 T 44 CATAB v2.0e-lin.ifort 2019-May-29 19:13:09 2019-May-29 19:13
2165-Jun-26 20:28 00:03 Jupiter 1.75774196379302 1.75774165432905 1.7577422732578 2.53287666622776 2.33488803530718 2511987.352924006 2.65409073966989 144.025550779038 4.93404927835205 87.924987166758 3999665.74229977 T 44 CATAB v2.0e-lin.ifort 2019-May-29 19:13:09 2019-May-29 19:13

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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