Cora»OccDetail

Stellar Occultation by (87) Sylvia on 2026-03-19 (21:04:01 UT)

Event Details
Occultation UUID [and db] : 690927c0-de6b-11f0-4858-58b1e65f3806 [asteroids] Occultation Date + Time : 2026-03-19 at 21:04:01 UT +/- 0.01 min [1] Object Designation : (87) Sylvia Star Designation : GDR3 3442765215184747520 Star Coordinates (ICRF) : RA = 05 37 02.8887, DE = +28 33 45.999 [2] Star Magnitudes : G = 14.26 mag, RP = 13.54 mag, BP = 14.82 mag Object Magnitude : V = 13.36 mag Estimated Magnitude Drop : 0.4 mag Estimated Max. Duration : 16.0 sec Speed of the shadow : 16.3 km/s Object Mean Diameter : 260.9 km (src: astorb) => apparent = 101 mas Apparent Motion : 0.3783 arcs/min @ PA = 87 deg Horizontal Parallax : 2.4650 arcs Dynamical Class : MBA Elongation to Moon & Sun : 75° (sunlit = 1%), Sun = 86° Cross-track uncertainty : 1.0 mas = 2 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.12 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#128 Note : FP:true Object is a <Gaia mass determination> target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and db] : 690927c0-de6b-11f0-4858-58b1e65f3806 [asteroids]

 Occultation Date + Time   : 2026-03-19 at 21:04:01 UT +/- 0.01 min  [1]
 Object Designation        : (87) Sylvia
 Star Designation          : GDR3 3442765215184747520
 Star Coordinates (ICRF)   : RA = 05 37 02.8887, DE = +28 33 45.999  [2]
 Star Magnitudes           : G = 14.26 mag, RP = 13.54 mag, BP = 14.82 mag
 Object Magnitude          : V = 13.36 mag
 Estimated Magnitude Drop  : 0.4 mag
 Estimated Max. Duration   : 16.0 sec
 Speed of the shadow       : 16.3 km/s
 Object Mean Diameter      : 260.9 km  (src: astorb) => apparent = 101 mas
 Apparent Motion           : 0.3783 arcs/min @ PA = 87 deg
 Horizontal Parallax       : 2.4650 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 75° (sunlit = 1%), Sun = 86°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.12 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#128
 Note                      : FP:true

 Object is a <Gaia mass determination> target !

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

More Data and Informations

SiMDA \| 3D Asteroid Catalogue \| Johnston Archive \| Star at CDS (Vizier) \| JPL Small-Body Node \| Minor Planet Center \| Wikipedia

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Occultation Ground Track
Time[UT] \| Lat----CENTR----Lon \| Alt hh:mm:ss \| +DD.dddd +DDD.dddd \| deg ---------------------------------------------- 20:58:34 +26.8601 -152.4078 +01 058 +57 20:58:52 +35.1536 -138.0832 +16 066 +54 20:59:09 +38.9687 -131.3496 +22 071 +51 20:59:27 +41.9396 -125.8665 +27 075 +47 20:59:44 +44.4578 -120.9570 +31 079 +44 21:00:02 +46.6742 -116.3559 +35 084 +41 21:00:20 +48.6644 -111.9240 +38 088 +38 21:00:37 +50.4721 -107.5755 +41 093 +35 21:00:55 +52.1239 -103.2519 +43 098 +32 21:01:13 +53.6366 -098.9101 +46 104 +29 21:01:30 +55.0208 -094.5173 +48 110 +26 21:01:48 +56.2828 -090.0478 +50 116 +23 21:02:05 +57.4256 -085.4820 +51 123 +21 21:02:23 +58.4501 -080.8053 +53 130 +18 21:02:41 +59.3553 -076.0081 +54 137 +16 21:02:58 +60.1390 -071.0865 +55 145 +13 21:03:16 +60.7980 -066.0417 +56 153 +10 21:03:33 +61.3287 -060.8808 +56 161 +08 21:03:51 +61.7271 -055.6163 +57 170 +05 21:04:09 +61.9895 -050.2660 +57 178 +03 21:04:26 +62.1125 -044.8516 +56 187 +00 21:04:44 +62.0931 -039.3983 +56 196 -03 21:05:01 +61.9291 -033.9320 +55 204 -05 21:05:19 +61.6190 -028.4782 +54 213 -08 21:05:37 +61.1617 -023.0597 +53 221 -10 21:05:54 +60.5563 -017.6953 +52 228 -13 21:06:12 +59.8019 -012.3976 +50 236 -16 21:06:29 +58.8966 -007.1726 +48 243 -19 21:06:47 +57.8370 -002.0180 +46 249 -21 21:07:05 +56.6175 +003.0769 +44 256 -24 21:07:22 +55.2283 +008.1335 +41 262 -27 21:07:40 +53.6538 +013.1860 +38 267 -31 21:07:57 +51.8685 +018.2865 +35 273 -34 21:08:15 +49.8303 +023.5156 +32 278 -37 21:08:33 +47.4650 +029.0074 +28 283 -41 21:08:50 +44.6254 +035.0162 +23 288 -45 21:09:08 +40.9382 +042.1745 +16 294 -49 21:09:26 +34.0971 +054.4037 +05 302 -55 Longitude measured positiv to the East.

Occultation Ground Track

 Time[UT] | Lat----CENTR----Lon | Alt hh:mm:ss | +DD.dddd  +DDD.dddd | deg ---------------------------------------------- 20:58:34   +26.8601  -152.4078   +01  058  +57 20:58:52   +35.1536  -138.0832   +16  066  +54 20:59:09   +38.9687  -131.3496   +22  071  +51 20:59:27   +41.9396  -125.8665   +27  075  +47 20:59:44   +44.4578  -120.9570   +31  079  +44 21:00:02   +46.6742  -116.3559   +35  084  +41 21:00:20   +48.6644  -111.9240   +38  088  +38 21:00:37   +50.4721  -107.5755   +41  093  +35 21:00:55   +52.1239  -103.2519   +43  098  +32 21:01:13   +53.6366  -098.9101   +46  104  +29 21:01:30   +55.0208  -094.5173   +48  110  +26 21:01:48   +56.2828  -090.0478   +50  116  +23 21:02:05   +57.4256  -085.4820   +51  123  +21 21:02:23   +58.4501  -080.8053   +53  130  +18 21:02:41   +59.3553  -076.0081   +54  137  +16 21:02:58   +60.1390  -071.0865   +55  145  +13 21:03:16   +60.7980  -066.0417   +56  153  +10 21:03:33   +61.3287  -060.8808   +56  161  +08 21:03:51   +61.7271  -055.6163   +57  170  +05 21:04:09   +61.9895  -050.2660   +57  178  +03 21:04:26   +62.1125  -044.8516   +56  187  +00 21:04:44   +62.0931  -039.3983   +56  196  -03 21:05:01   +61.9291  -033.9320   +55  204  -05 21:05:19   +61.6190  -028.4782   +54  213  -08 21:05:37   +61.1617  -023.0597   +53  221  -10 21:05:54   +60.5563  -017.6953   +52  228  -13 21:06:12   +59.8019  -012.3976   +50  236  -16 21:06:29   +58.8966  -007.1726   +48  243  -19 21:06:47   +57.8370  -002.0180   +46  249  -21 21:07:05   +56.6175  +003.0769   +44  256  -24 21:07:22   +55.2283  +008.1335   +41  262  -27 21:07:40   +53.6538  +013.1860   +38  267  -31 21:07:57   +51.8685  +018.2865   +35  273  -34 21:08:15   +49.8303  +023.5156   +32  278  -37 21:08:33   +47.4650  +029.0074   +28  283  -41 21:08:50   +44.6254  +035.0162   +23  288  -45 21:09:08   +40.9382  +042.1745   +16  294  -49 21:09:26   +34.0971  +054.4037   +05  302  -55

Longitude measured positiv to the East.

------------------------------------------------------------------------------------------- Azm Sun | Lat----EDGE1----Lon | Lat----EDGE2----Lon deg deg | +DD.dddd +DDD.dddd | +DD.dddd +DDD.dddd --------------------------------------------- +27.4934 -153.9103 +29.8177 -144.3624 +34.8706 -141.5792 +35.1663 -135.0716 +39.1800 -134.1023 +38.6366 -128.8388 +42.3731 -128.3333 +41.4269 -123.5831 +45.0354 -123.2634 +43.8210 -118.8114 +47.3611 -118.5535 +45.9404 -114.3092 +49.4419 -114.0366 +47.8490 -109.9583 +51.3288 -109.6131 +49.5847 -105.6837 +53.0522 -105.2160 +51.1710 -101.4336 +54.6311 -100.7964 +52.6232 -097.1699 +56.0772 -096.3170 +53.9509 -092.8635 +57.3973 -091.7482 +55.1599 -088.4919 +58.5946 -087.0669 +56.2534 -084.0381 +59.6696 -082.2557 +57.2322 -079.4896 +60.6211 -077.3028 +58.0959 -074.8386 +61.4460 -072.2028 +58.8427 -070.0819 +62.1404 -066.9568 +59.4703 -065.2208 +62.6997 -061.5727 +59.9756 -060.2612 +63.1192 -056.0659 +60.3554 -055.2135 +63.3942 -050.4579 +60.6067 -050.0921 +63.5207 -044.7763 +60.7263 -044.9147 +63.4954 -039.0522 +60.7119 -039.7012 +63.3160 -033.3185 +60.5613 -034.4727 +62.9810 -027.6069 +60.2728 -029.2493 +62.4898 -021.9461 +59.8452 -024.0498 +61.8420 -016.3585 +59.2771 -018.8892 +61.0372 -010.8595 +58.5672 -013.7781 +60.0741 -005.4555 +57.7132 -008.7215 +58.9498 -000.1435 +56.7116 -003.7177 +57.6584 +005.0901 +55.5566 +001.2423 +56.1895 +010.2708 +54.2392 +006.1768 +54.5258 +015.4388 +52.7449 +011.1152 +52.6383 +020.6552 +51.0511 +016.1027 +50.4779 +026.0150 +49.1211 +021.2086 +47.9547 +031.6800 +46.8922 +026.5461 +44.8798 +037.9748 +44.2456 +032.3210 +40.7041 +045.8249 +40.9081 +038.9987 +40.8653 +045.4833 +35.8195 +048.3805 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.