Cora»Occultation

2024-12-31 / UCAC4 575-022831 / (2718) Handley

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Martin Gutekunst	O+	VID	L280	DE	GPS	01:29:25	01:29:52.640	01:29:53.499	01:30:25	0.009	0.009	0.86	12.8
2	show	Gregor Krannich	O+	VID	M350	DE	GPS	01:28:56	01:29:55.19	01:29:55.45	01:30:56	0.07	0.07	0.26	3.9

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#68 : 615fc970-ddb2-11f0-547e-d1c0f68d4f61 [db: observed]

Using prediction 615fc970-ddb2-11f0-547e-d1c0f68d4f61 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:
X0,Y0 = -55.7, 18.4 km
Circular diameter = 22 km

From 2 chords (VID)

You can enter space separated chord numbers (example: 11 4 8) or a method like VIS to ignore all visual timings, or a time source like RAD and NTP (but not GPS).
If the plot disappears, then there are less than 2 chords left (too much ignored, go back with browser).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2024-12-31, 01:29 UT (JD = 2460675.562)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 2016	1.5	13.098	261°, -53°	2.44819e6	12485.6	0.0°	None	2018-07-19	not scaled	2018-07-18
# 2017	1.5	13.098	84°, -52°	2.44819e6	12485.6	0.0°	None	2018-07-19	not scaled	2018-07-18

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] : 615fc970-ddb2-11f0-547e-d1c0f68d4f61 [observed] Occultation Date + Time : 2024-12-31 at 01:33:05 UT +/- 0.0 min [1] Object Designation : (2718) Handley Orbit Class : MBA Star Designation : GDR3 3426521855030858624 Star Coordinates (ICRF) : RA = 06 02 16.8899, DE = +24 59 06.912 [2] Star Magnitudes : G = 12.34 mag, RP = 11.97 mag, BP = 12.55 mag Object Magnitude : V = 16.91 mag Estimated Magnitude Drop : 4.6 mag Estimated Max. Duration : 1.7 sec Object Mean Diameter : 26.0 km (src: astorb) Speed of the shadow : 14.9 km/s Elongation to Moon & Sun : 169° (sunlit = 0%), Sun = 171° Cross-track uncertainty : 0.1 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.06 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#68 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 615fc970-ddb2-11f0-547e-d1c0f68d4f61 [observed]

 Occultation Date + Time   : 2024-12-31 at 01:33:05 UT +/- 0.0 min  [1]
 Object Designation        : (2718) Handley
 Orbit Class               : MBA
 Star Designation          : GDR3 3426521855030858624
 Star Coordinates (ICRF)   : RA = 06 02 16.8899, DE = +24 59 06.912  [2]
 Star Magnitudes           : G = 12.34 mag, RP = 11.97 mag, BP = 12.55 mag
 Object Magnitude          : V = 16.91 mag
 Estimated Magnitude Drop  : 4.6 mag
 Estimated Max. Duration   : 1.7 sec
 Object Mean Diameter      : 26.0 km  (src: astorb)
 Speed of the shadow       : 14.9 km/s
 Elongation to Moon & Sun  : 169° (sunlit = 0%), Sun = 171°
 Cross-track uncertainty   : 0.1 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.06 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#68
 Note                      : FP:true

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

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