Cora»Occultation

2025-09-01 / UCAC4 619-024419 / (1642) Hill

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Simon Kidd	O+	VID	M350	GB	GPS	00:52:00	00:52:55.81	00:52:56.53	00:54:00	0.040	0.040	0.72	18.6

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#73 : 5c3e3620-ddb7-11f0-547e-8afbecdbfcdb [db: observed]

Using prediction 5c3e3620-ddb7-11f0-547e-8afbecdbfcdb for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-09-01, 00:52 UT (JD = 2460919.536)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 4668	1.0	6.043	117°, 64°	2.45723e6	3689.5	0.0°	None	2020-10-05	not scaled	2019-10-23
# 4669	1.0	6.043	276°, 33°	2.45723e6	3689.5	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] : 5c3e3620-ddb7-11f0-547e-8afbecdbfcdb [observed] Occultation Date + Time : 2025-09-01 at 00:54:53 UT +/- 0.0 min [1] Object Designation : (1642) Hill Orbit Class : MBA Star Designation : GDR3 3449478828889091456 Star Coordinates (ICRF) : RA = 05 35 18.0738, DE = +33 41 52.353 [2] Star Magnitudes : G = 14.14 mag, RP = 13.52 mag, BP = 14.59 mag Object Magnitude : V = 16.29 mag Estimated Magnitude Drop : 2.3 mag Estimated Max. Duration : 1.0 sec Object Mean Diameter : 26.1 km (src: astorb) Speed of the shadow : 25.8 km/s Elongation to Moon & Sun : 171° (sunlit = 57%), Sun = 74° Cross-track uncertainty : 0.2 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#73 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 5c3e3620-ddb7-11f0-547e-8afbecdbfcdb [observed] Occultation Date + Time : 2025-09-01 at 00:54:53 UT +/- 0.0 min [1] Object Designation : (1642) Hill Orbit Class : MBA Star Designation : GDR3 3449478828889091456 Star Coordinates (ICRF) : RA = 05 35 18.0738, DE = +33 41 52.353 [2] Star Magnitudes : G = 14.14 mag, RP = 13.52 mag, BP = 14.59 mag Object Magnitude : V = 16.29 mag Estimated Magnitude Drop : 2.3 mag Estimated Max. Duration : 1.0 sec Object Mean Diameter : 26.1 km (src: astorb) Speed of the shadow : 25.8 km/s Elongation to Moon & Sun : 171° (sunlit = 57%), Sun = 74° Cross-track uncertainty : 0.2 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#73 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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