2024-12-10 / TYC 2426-00530-1 / (120) Lachesis

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Rui Goncalves	O+	VID	M256	PT	GPS	23:28:36	23:29:35.40	23:29:47.89	23:31:01	0.10	0.06	12.49	154.9
2	show	Oscar Canales	O+	CCD	M200	ES	GPS	23:27:26	23:28:51.29	23:28:57.68	23:30:26	0.12	0.12	6.39	79.2

UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):

JPL#161 : b98278c0-ddb5-11f0-547e-44144ff71853 [db: observed]

Using prediction b98278c0-ddb5-11f0-547e-44144ff71853 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: X0,Y0 = -102.3, 16.4 km Circular diameter = 175 km From 2 chords (VID,CCD) Chords to ignore: Fill: Grid: Show (close) miss chords: 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: 2024-12-10, 23:29 UT (JD = 2460655.478)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 943	None	46.551	256°, 39°	2.445042e6	15613.5	0.0°	None	None	not scaled	2016-01-04
# 944	None	46.550	82°, 55°	2.445042e6	15613.5	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

Map with groundtrack and observer stations

Event Details

Occultation UUID [and DB] : b98278c0-ddb5-11f0-547e-44144ff71853 [observed] Occultation Date + Time : 2024-12-10 at 23:25:47 UT +/- 0.01 min [1] Object Designation : (120) Lachesis Orbit Class : MBA Star Designation : GDR3 3436174669471885568 Star Coordinates (ICRF) : RA = 06 35 26.8896, DE = +32 21 30.036 [2] Star Magnitudes : G = 12.21 mag, RP = 11.57 mag, BP = 12.7 mag Object Magnitude : V = 12.59 mag Estimated Magnitude Drop : 1.0 mag Estimated Max. Duration : 14.0 sec Object Mean Diameter : 174.1 km (src: astorb) Speed of the shadow : 12.4 km/s Elongation to Moon & Sun : 77° (sunlit = 76%), Sun = 160° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.13 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#161 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations
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