Collaborative Occultation Resources and Archive (CORA)

2024-07-19 / UCAC4 368-149310 / (168) Sibylla

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Dimitrios Athanasopoulos, Sophia Derlopa	O+	CCD	T1200	GR	NTP	21:42:20	21:43:04.552	21:43:16.674	21:45:10	0.5	0.5	12.12	146.7
2	show	Dimitrios Athanasopoulos, Sophia Derlopa	O+	CCD	T1200	GR	NTP	21:42:20	21:43:05.408	21:43:15.979	21:45:10	0.75	0.75	10.57	127.9

UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):

JPL#78 : 6296fdf0-c34f-11ef-5276-30b4c73cb5cc [db: observed]

JPL#78 : 58ef1c00-c350-11ef-5276-5620b8550912 [db: observed]

JPL#76 : a06bace0-854a-11ef-78cd-5842f7be8caf [db: asteroids]

Using prediction 6296fdf0-c34f-11ef-5276-30b4c73cb5cc for map and profile fit

Get observations as KML file (reduced site location resolution)

Ellipse and circular profile fits to the timings (chords)

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Event Details
Occultation UUID [and DB] : 6296fdf0-c34f-11ef-5276-30b4c73cb5cc [observed] Occultation Date + Time : 2024-07-19 at 21:44:41 UT +/- 0.01 min [1] Object Designation : (168) Sibylla Orbit Class : MBA Star Designation : GDR3 4100036258262327808 Star Coordinates (ICRF) : RA = 18 43 19.1073, DE = -16 34 32.405 [2] Star Magnitudes : G = 14.98 mag, RP = 14.12 mag, BP = 15.73 mag Object Magnitude : V = 13.27 mag Estimated Magnitude Drop : 0.2 mag Estimated Max. Duration : 12.3 sec Object Mean Diameter : 148.4 km (src: astorb) Speed of the shadow : 12.1 km/s Elongation to Moon & Sun : 12° (sunlit = 97%), Sun = 162° Cross-track uncertainty : 1.0 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.08 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#78 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] : 6296fdf0-c34f-11ef-5276-30b4c73cb5cc [observed]

 Occultation Date + Time   : 2024-07-19 at 21:44:41 UT +/- 0.01 min  [1]
 Object Designation        : (168) Sibylla
 Orbit Class               : MBA
 Star Designation          : GDR3 4100036258262327808
 Star Coordinates (ICRF)   : RA = 18 43 19.1073, DE = -16 34 32.405  [2]
 Star Magnitudes           : G = 14.98 mag, RP = 14.12 mag, BP = 15.73 mag
 Object Magnitude          : V = 13.27 mag
 Estimated Magnitude Drop  : 0.2 mag
 Estimated Max. Duration   : 12.3 sec
 Object Mean Diameter      : 148.4 km  (src: astorb)
 Speed of the shadow       : 12.1 km/s
 Elongation to Moon & Sun  : 12° (sunlit = 97%), Sun = 162°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.08 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#78

 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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Aladin Sky Atlas
18 43 19.107 -16 34 32.41 FoV: 29.96' +– × × Go to:
Aladin Lite direct link (has Gaia overlay)