Cora»Occultation

2025-10-04 / UCAC4 568-015283 / (1645) Waterfield

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Björn Kattentidt	O+	VID	M280	DE	GPS	22:54:01	22:55:47.347	22:55:49.267	22:58:00	0.360	0.360	1.92	9.4

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#77 : 819f5830-ddb8-11f0-547e-ecb776c70c81 [db: observed]

Using prediction 819f5830-ddb8-11f0-547e-ecb776c70c81 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-10-04, 22:55 UT (JD = 2460953.455)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 4670	1.0	4.843	151°, 59°	2.45732e6	3633.5	0.0°	None	2020-10-05	not scaled	2019-10-23
# 4671	1.0	4.843	336°, 43°	2.45732e6	3633.5	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] : 819f5830-ddb8-11f0-547e-ecb776c70c81 [observed] Occultation Date + Time : 2025-10-04 at 23:08:11 UT +/- 0.01 min [1] Object Designation : (1645) Waterfield Orbit Class : MBA Star Designation : GDR3 3415802338212917376 Star Coordinates (ICRF) : RA = 05 10 50.7296, DE = +23 30 44.501 [2] Star Magnitudes : G = 14.81 mag, RP = 14.04 mag, BP = 15.44 mag Object Magnitude : V = 16.17 mag Estimated Magnitude Drop : 1.6 mag Estimated Max. Duration : 6.2 sec Object Mean Diameter : 30.6 km (src: astorb) Speed of the shadow : 4.9 km/s Elongation to Moon & Sun : 97° (sunlit = 93%), Sun = 113° Cross-track uncertainty : 0.4 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#77 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 819f5830-ddb8-11f0-547e-ecb776c70c81 [observed] Occultation Date + Time : 2025-10-04 at 23:08:11 UT +/- 0.01 min [1] Object Designation : (1645) Waterfield Orbit Class : MBA Star Designation : GDR3 3415802338212917376 Star Coordinates (ICRF) : RA = 05 10 50.7296, DE = +23 30 44.501 [2] Star Magnitudes : G = 14.81 mag, RP = 14.04 mag, BP = 15.44 mag Object Magnitude : V = 16.17 mag Estimated Magnitude Drop : 1.6 mag Estimated Max. Duration : 6.2 sec Object Mean Diameter : 30.6 km (src: astorb) Speed of the shadow : 4.9 km/s Elongation to Moon & Sun : 97° (sunlit = 93%), Sun = 113° Cross-track uncertainty : 0.4 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#77 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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