Cora»Occultation

2025-10-23 / TYC 6278-02496-1 / (124) Alkeste

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Daniel Antuszewicz	O+	VID	M300	PL	NTP	17:57:37	17:58:35.24	17:58:37.28	17:59:36	0.120	0.080	2.04	62.4

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

1 observation found in db: sodis

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

JPL#164 : 9d08b580-ddb8-11f0-547e-3c8bf97f8ed3 [db: observed]

Using prediction 9d08b580-ddb8-11f0-547e-3c8bf97f8ed3 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-10-23, 17:57 UT (JD = 2460972.248)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 4511	1.0	9.907	136°, 16°	2.457359e6	3613.2	0.0°	None	2020-10-05	not scaled	2019-10-23
# 4512	1.0	9.907	313°, 11°	2.457359e6	3613.2	0.0°	None	2020-10-05	not scaled	2019-10-23

Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0

Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 9d08b580-ddb8-11f0-547e-3c8bf97f8ed3 [observed] Occultation Date + Time : 2025-10-23 at 17:57:03 UT +/- 0.0 min [1] Object Designation : (124) Alkeste Orbit Class : MBA Star Designation : GDR3 4091887635792205696 Star Coordinates (ICRF) : RA = 18 30 18.9967, DE = -20 42 14.688 [2] Star Magnitudes : G = 11.72 mag, RP = 10.81 mag, BP = 12.59 mag Object Magnitude : V = 13.2 mag Estimated Magnitude Drop : 1.7 mag Estimated Max. Duration : 2.5 sec Object Mean Diameter : 76.4 km (src: astorb) Speed of the shadow : 30.6 km/s Elongation to Moon & Sun : 43° (sunlit = 4%), Sun = 67° Cross-track uncertainty : 0.7 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.73 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#164 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 9d08b580-ddb8-11f0-547e-3c8bf97f8ed3 [observed] Occultation Date + Time : 2025-10-23 at 17:57:03 UT +/- 0.0 min [1] Object Designation : (124) Alkeste Orbit Class : MBA Star Designation : GDR3 4091887635792205696 Star Coordinates (ICRF) : RA = 18 30 18.9967, DE = -20 42 14.688 [2] Star Magnitudes : G = 11.72 mag, RP = 10.81 mag, BP = 12.59 mag Object Magnitude : V = 13.2 mag Estimated Magnitude Drop : 1.7 mag Estimated Max. Duration : 2.5 sec Object Mean Diameter : 76.4 km (src: astorb) Speed of the shadow : 30.6 km/s Elongation to Moon & Sun : 43° (sunlit = 4%), Sun = 67° Cross-track uncertainty : 0.7 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.73 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#164 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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