Cora»Occultation

2025-12-14 / UCAC4 546-041143 / (4092) Tyr

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Anna Marciniak	O+	CCD	M350	PL	NTP	20:38:18	20:38:50.20	20:38:50.63	20:39:22	0.050	0.050	0.43	4.2

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#67 : dc0fcf70-ddb8-11f0-547e-47e27feab59d [db: observed]

Using prediction dc0fcf70-ddb8-11f0-547e-47e27feab59d for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-12-14, 20:37 UT (JD = 2461024.359)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 3626	1.0	16.094	171°, 21°	2.450955e6	10069.4	0.0°	None	2019-09-26	not scaled	2019-05-07
# 3627	1.0	16.094	353°, 31°	2.450955e6	10069.4	0.0°	None	2019-09-26	not scaled	2019-05-07

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] : dc0fcf70-ddb8-11f0-547e-47e27feab59d [observed] Occultation Date + Time : 2025-12-14 at 20:33:03 UT +/- 0.0 min [1] Object Designation : (4092) Tyr Orbit Class : MBA Star Designation : GDR3 3362649162987612160 Star Coordinates (ICRF) : RA = 07 27 11.4348, DE = +19 06 21.685 [2] Star Magnitudes : G = 10.36 mag, RP = 9.55 mag, BP = 11.07 mag Object Magnitude : V = 17.07 mag Estimated Magnitude Drop : 6.7 mag Estimated Max. Duration : 0.8 sec Object Mean Diameter : 7.5 km (src: astorb) Speed of the shadow : 9.8 km/s Elongation to Moon & Sun : 96° (sunlit = 23%), Sun = 152° Cross-track uncertainty : 0.3 mas = 0 km = 0.05 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#67 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : dc0fcf70-ddb8-11f0-547e-47e27feab59d [observed] Occultation Date + Time : 2025-12-14 at 20:33:03 UT +/- 0.0 min [1] Object Designation : (4092) Tyr Orbit Class : MBA Star Designation : GDR3 3362649162987612160 Star Coordinates (ICRF) : RA = 07 27 11.4348, DE = +19 06 21.685 [2] Star Magnitudes : G = 10.36 mag, RP = 9.55 mag, BP = 11.07 mag Object Magnitude : V = 17.07 mag Estimated Magnitude Drop : 6.7 mag Estimated Max. Duration : 0.8 sec Object Mean Diameter : 7.5 km (src: astorb) Speed of the shadow : 9.8 km/s Elongation to Moon & Sun : 96° (sunlit = 23%), Sun = 152° Cross-track uncertainty : 0.3 mas = 0 km = 0.05 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#67 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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