Cora»Occultation

2025-08-27 / UCAC4 303-255305 / (1665) Gaby

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Deborah Smith	O+	VID	M200	ES	GPS	21:44:35	21:46:33.269	21:46:36.255	21:48:35	0.017	0.017	2.99	9.6
2	show	Jiri Kubanek	O+	VID	M303	CZ	GPS	21:41:24	21:42:22.7	21:42:26.7	21:42:33	0.200	0.200	4.00	12.8

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#69 : 55ac6340-ddb7-11f0-547e-44ec73ff2f3b [db: observed]

Using prediction 55ac6340-ddb7-11f0-547e-44ec73ff2f3b for map and profile fit

Get observations as KML file (reduced site location resolution)

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result:
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Sky projection (artificial light) for occ. time: 2025-08-27, 21:45 UT (JD = 2460915.406)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 1231	None	67.911	261°, 41°	2.444941e6	15974.4	0.0°	None	None	not scaled	2016-01-04
# 1232	None	67.911	66°, 32°	2.444941e6	15974.4	0.0°	None	None	not scaled	2016-01-04

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] : 55ac6340-ddb7-11f0-547e-44ec73ff2f3b [observed] Occultation Date + Time : 2025-08-27 at 22:00:37 UT +/- 0.01 min [1] Object Designation : (1665) Gaby Orbit Class : MBA Star Designation : GDR3 6761617905184237952 Star Coordinates (ICRF) : RA = 18 55 42.5970, DE = -29 31 33.760 [2] Star Magnitudes : G = 10.81 mag, RP = 10.37 mag, BP = 11.09 mag Object Magnitude : V = 16.66 mag Estimated Magnitude Drop : 5.9 mag Estimated Max. Duration : 4.5 sec Object Mean Diameter : 14.6 km (src: astorb) Speed of the shadow : 3.2 km/s Elongation to Moon & Sun : 74° (sunlit = 20%), Sun = 127° Cross-track uncertainty : 0.3 mas = 0 km = 0.03 path-width (1-sig) RUWE and duplicate source : 0.84 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#69 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 55ac6340-ddb7-11f0-547e-44ec73ff2f3b [observed]

 Occultation Date + Time   : 2025-08-27 at 22:00:37 UT +/- 0.01 min  [1]
 Object Designation        : (1665) Gaby
 Orbit Class               : MBA
 Star Designation          : GDR3 6761617905184237952
 Star Coordinates (ICRF)   : RA = 18 55 42.5970, DE = -29 31 33.760  [2]
 Star Magnitudes           : G = 10.81 mag, RP = 10.37 mag, BP = 11.09 mag
 Object Magnitude          : V = 16.66 mag
 Estimated Magnitude Drop  : 5.9 mag
 Estimated Max. Duration   : 4.5 sec
 Object Mean Diameter      : 14.6 km  (src: astorb)
 Speed of the shadow       : 3.2 km/s
 Elongation to Moon & Sun  : 74° (sunlit = 20%), Sun = 127°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.84 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#69
 Note                      : FP:true

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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