Cora»OccDetail

Stellar Occultation by (381974) 2010 FS18 on 2025-10-20 (19:51:04 UT)

Event Details
Occultation UUID [and db] : 989073d0-ddb8-11f0-547e-c3d7eee044d5 [observed] Occultation Date + Time : 2025-10-20 at 19:51:04 UT +/- 0.14 min [1] Object Designation : (381974) 2010 FS18 Star Designation : GDR3 0940680923968749952 Star Coordinates (ICRF) : RA = 06 50 30.3019, DE = +36 50 51.294 [2] Star Magnitudes : G = 13.62 mag, RP = 13.14 mag, BP = 13.93 mag Object Magnitude : V = 21.16 mag Estimated Magnitude Drop : 7.5 mag Estimated Max. Duration : 0.2 sec Speed of the shadow : 10.8 km/s Object Mean Diameter : 2.2 km (src: astorb) => apparent = 1 mas Apparent Motion : 0.3700 arcs/min @ PA = 55 deg Horizontal Parallax : 3.6320 arcs Dynamical Class : MBA Elongation to Moon & Sun : 100° (sunlit = 0%), Sun = 107° Cross-track uncertainty : 22.0 mas = 38 km = 17.56 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#36 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and db] : 989073d0-ddb8-11f0-547e-c3d7eee044d5 [observed]

 Occultation Date + Time   : 2025-10-20 at 19:51:04 UT +/- 0.14 min  [1]
 Object Designation        : (381974) 2010 FS18
 Star Designation          : GDR3 0940680923968749952
 Star Coordinates (ICRF)   : RA = 06 50 30.3019, DE = +36 50 51.294  [2]
 Star Magnitudes           : G = 13.62 mag, RP = 13.14 mag, BP = 13.93 mag
 Object Magnitude          : V = 21.16 mag
 Estimated Magnitude Drop  : 7.5 mag
 Estimated Max. Duration   : 0.2 sec
 Speed of the shadow       : 10.8 km/s
 Object Mean Diameter      : 2.2 km  (src: astorb) => apparent = 1 mas
 Apparent Motion           : 0.3700 arcs/min @ PA = 55 deg
 Horizontal Parallax       : 3.6320 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 100° (sunlit = 0%), Sun = 107°
 Cross-track uncertainty   : 22.0 mas = 38 km = 17.56 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#36
 Note                      : FP:true

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations

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Occultation Ground Track
Time[UT] \| Lat----CENTR----Lon \| Alt hh:mm:ss \| +DD.dddd +DDD.dddd \| deg ---------------------------------------------- 19:49:01 +35.6319 +019.7409 +04 046 -47 19:49:09 +37.4611 +020.8053 +06 047 -47 19:49:16 +38.8807 +021.3707 +07 047 -46 19:49:24 +40.1058 +021.6886 +08 048 -46 19:49:31 +41.2082 +021.8426 +09 048 -45 19:49:39 +42.2221 +021.8723 +09 048 -45 19:49:46 +43.1670 +021.8000 +10 048 -44 19:49:54 +44.0550 +021.6395 +11 048 -44 19:50:01 +44.8943 +021.3997 +11 048 -43 19:50:09 +45.6904 +021.0865 +11 048 -43 19:50:16 +46.4471 +020.7039 +12 048 -42 19:50:24 +47.1671 +020.2547 +12 048 -41 19:50:31 +47.8524 +019.7406 +12 048 -41 19:50:39 +48.5039 +019.1627 +12 047 -40 19:50:46 +49.1224 +018.5213 +13 047 -39 19:50:54 +49.7078 +017.8167 +13 047 -39 19:51:01 +50.2599 +017.0484 +13 046 -38 19:51:09 +50.7780 +016.2158 +13 046 -37 19:51:16 +51.2608 +015.3183 +13 045 -36 19:51:24 +51.7069 +014.3549 +12 045 -36 19:51:31 +52.1142 +013.3242 +12 044 -35 19:51:39 +52.4801 +012.2251 +12 043 -34 19:51:46 +52.8015 +011.0560 +12 043 -33 19:51:54 +53.0746 +009.8153 +12 042 -33 19:52:01 +53.2945 +008.5008 +11 041 -32 19:52:09 +53.4553 +007.1102 +11 040 -31 19:52:16 +53.5490 +005.6402 +10 039 -30 19:52:24 +53.5657 +004.0867 +10 038 -29 19:52:31 +53.4913 +002.4433 +09 037 -29 19:52:39 +53.3055 +000.6999 +08 035 -28 19:52:46 +52.9764 -001.1609 +08 034 -27 19:52:54 +52.4473 -003.1736 +06 033 -26 19:53:01 +51.5924 -005.4212 +05 031 -25 19:53:09 +49.9355 -008.2448 +03 029 -23 Longitude measured positiv to the East.

Occultation Ground Track

 Time[UT] | Lat----CENTR----Lon | Alt hh:mm:ss | +DD.dddd  +DDD.dddd | deg ---------------------------------------------- 19:49:01   +35.6319  +019.7409   +04  046  -47 19:49:09   +37.4611  +020.8053   +06  047  -47 19:49:16   +38.8807  +021.3707   +07  047  -46 19:49:24   +40.1058  +021.6886   +08  048  -46 19:49:31   +41.2082  +021.8426   +09  048  -45 19:49:39   +42.2221  +021.8723   +09  048  -45 19:49:46   +43.1670  +021.8000   +10  048  -44 19:49:54   +44.0550  +021.6395   +11  048  -44 19:50:01   +44.8943  +021.3997   +11  048  -43 19:50:09   +45.6904  +021.0865   +11  048  -43 19:50:16   +46.4471  +020.7039   +12  048  -42 19:50:24   +47.1671  +020.2547   +12  048  -41 19:50:31   +47.8524  +019.7406   +12  048  -41 19:50:39   +48.5039  +019.1627   +12  047  -40 19:50:46   +49.1224  +018.5213   +13  047  -39 19:50:54   +49.7078  +017.8167   +13  047  -39 19:51:01   +50.2599  +017.0484   +13  046  -38 19:51:09   +50.7780  +016.2158   +13  046  -37 19:51:16   +51.2608  +015.3183   +13  045  -36 19:51:24   +51.7069  +014.3549   +12  045  -36 19:51:31   +52.1142  +013.3242   +12  044  -35 19:51:39   +52.4801  +012.2251   +12  043  -34 19:51:46   +52.8015  +011.0560   +12  043  -33 19:51:54   +53.0746  +009.8153   +12  042  -33 19:52:01   +53.2945  +008.5008   +11  041  -32 19:52:09   +53.4553  +007.1102   +11  040  -31 19:52:16   +53.5490  +005.6402   +10  039  -30 19:52:24   +53.5657  +004.0867   +10  038  -29 19:52:31   +53.4913  +002.4433   +09  037  -29 19:52:39   +53.3055  +000.6999   +08  035  -28 19:52:46   +52.9764  -001.1609   +08  034  -27 19:52:54   +52.4473  -003.1736   +06  033  -26 19:53:01   +51.5924  -005.4212   +05  031  -25 19:53:09   +49.9355  -008.2448   +03  029  -23

Longitude measured positiv to the East.

------------------------------------------------------------------------------------------- Azm Sun | Lat----EDGE1----Lon | Lat----EDGE2----Lon deg deg | +DD.dddd +DDD.dddd | +DD.dddd +DDD.dddd --------------------------------------------- +35.5204 +019.5959 +35.7382 +019.8798 +37.3910 +020.7084 +37.5297 +020.9005 +38.8250 +021.2905 +38.9356 +021.4500 +40.0579 +021.6173 +40.1533 +021.7594 +41.1652 +021.7768 +41.2509 +021.9079 +42.1824 +021.8104 +42.2615 +021.9339 +43.1297 +021.7409 +43.2040 +021.8589 +44.0195 +021.5824 +44.0903 +021.6964 +44.8602 +021.3441 +44.9282 +021.4550 +45.6572 +021.0321 +45.7233 +021.1406 +46.4147 +020.6505 +46.4793 +020.7572 +47.1353 +020.2020 +47.1988 +020.3073 +47.8209 +019.6884 +47.8837 +019.7927 +48.4726 +019.1108 +48.5351 +019.2144 +49.0911 +018.4697 +49.1535 +018.5728 +49.6764 +017.7652 +49.7391 +017.8680 +50.2283 +016.9969 +50.2914 +017.0997 +50.7460 +016.1643 +50.8098 +016.2672 +51.2284 +015.2667 +51.2932 +015.3699 +51.6738 +014.3030 +51.7399 +014.4066 +52.0802 +013.2721 +52.1479 +013.3763 +52.4452 +012.1726 +52.5148 +012.2775 +52.7655 +011.0030 +52.8374 +011.1089 +53.0372 +009.7617 +53.1119 +009.8687 +53.2554 +008.4464 +53.3335 +008.5550 +53.4141 +007.0549 +53.4962 +007.1653 +53.5054 +005.5838 +53.5924 +005.6965 +53.5190 +004.0288 +53.6121 +004.1445 +53.4406 +002.3832 +53.5416 +002.5031 +53.2495 +000.6369 +53.3610 +000.7626 +52.9128 -001.2285 +53.0393 -001.0938 +52.3715 -003.2490 +52.5220 -003.0989 +51.4924 -005.5133 +51.6901 -005.3308 +49.7351 -008.4108 +50.1192 -008.0914 Azimuth (Azm) measured from North to East.

Apply ephem. offset (O-C) in RA & DE and CTU:
CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.