2023-09-23 / UCAC4 350-112253 / (52) Europa

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jesús Delgado	O+	CCD	M280	ES	GPS	2:06:41.	20:08:34.72	20:08:54.67	20:10:38	0.15	0.15	19.95	347.1
2	show	Eric Smith, Deborah Smith, +1	O+	CCD	M280	ES	NTP	20:06:50	20:08:47.65	20:09:07.85	20:10:10	0.13	0.13	20.20	351.5
3	show	Eric Smith, Deborah Smith	O+	CCD	M235	ES	NTP	20:06:01	20:08:47.42	20:09:07.85	20:10:36	0.1532	0.1532	20.43	355.5
4	show	Rafael G Farfan	O+	DRS	M280	ES	NTP	20:08:31	20:08:37.80	20:08:59.38	20:09:33	0.09	0.09	21.58	375.5
5	show	Javier De Elías	O+	VID	M306	ES	NTP	20:07:13	20:08:48.06	20:09:09.18	20:10:54	0.05	0.05	21.12	367.5
6	show	Rui Goncalves	O+	VID	M256	PT	GPS	20:07:09	20:08:18.44	20:08:38.46	20:09:44	0.10	0.12	20.02	348.3
7	show	Ramon Iglesias	O+	CCD	T400	ES	NTP	20:00:36	20:08:49.200	20:09:08.100	20:14:21	1.00	1.00	18.90	328.9
8	show	Carles Schnabel	O+	VID	M280	ES	GPS	20:07:21	20:08:59.31	20:09:12.24	20:11:17	0.08	0.08	12.93	225.0
9	show	Oscar Canales, Fernando Campos-Chema Oncins	O+	CCD	M230	ES	GPS	20:06:55	20:08:50.346	20:08:59.081	20:10:55	0.066	0.066	8.74	152.1
10	show	Bernat Garreta	O+	CCD	M200	ES	NTP	20:08:07	20:09:00.55	20:09:12.95	20:10:03	0.15	0.08	12.40	215.8
11	show	Jorge JUAN	O+	VID	M410	ES	GPS	20:07:21	20:08:59.34	20:09:10.14	20:11:03	0.04	0.04	10.80	187.9
12	show	Antoni Selva, Carlos Perello, +1	O+	VID	M500	ES	GPS	20:07:07	20:09:00.410	20:09:11.620	20:11:06	0.02	0.03	11.21	195.1
13	show	joan rovira	O+	VID	M250	ES	GPS	20:06:00	20:09:03.67	20:09:05.65	20:12:00	0.08	0.04	1.98	34.5
14	show	Faustino Garcia	O-	VID	L80	ES	GPS	20:07:26			20:09:26

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

14 observations found in db: sodis

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

JPL#141 : 32670730-ddb4-11f0-547e-8eb9dfef9627 [db: observed]

Using prediction 32670730-ddb4-11f0-547e-8eb9dfef9627 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: Size = 374 x 303 km a',b' = 186.9, 151.3 km X0,Y0 = -1212.6, 11.2 km Mean diameter = 336 km From 13 chords (CCD,DRS,VID) 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: 2023-09-23, 20:07 UT (JD = 2460211.338)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 135	None	5.630	251°, 35°	2.44535930436e6	14852.0	0.0°	based on an older lightcurve data set, size from AO is 277+/-25 km	2013-07-23	293.0 +/- 30.0 km	2011-03-28
# 463	4.0	5.630	259°, 39°	2.44535930436e6	14852.0	0.0°	None	2017-06-19	319.0 +/- 5.0 km	2017-06-13

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] : 32670730-ddb4-11f0-547e-8eb9dfef9627 [observed] Occultation Date + Time : 2023-09-23 at 20:07:15 UT +/- 0.0 min [1] Object Designation : (52) Europa Orbit Class : MBA Star Designation : GDR3 4119724246550093696 Star Coordinates (ICRF) : RA = 17 44 00.0596, DE = -20 05 33.505 [2] Star Magnitudes : G = 11.71 mag, RP = 10.6 mag, BP = 12.99 mag Object Magnitude : V = 12.82 mag Estimated Magnitude Drop : 1.4 mag Estimated Max. Duration : 17.4 sec Object Mean Diameter : 302.5 km (src: astorb) Speed of the shadow : 17.4 km/s Elongation to Moon & Sun : 19° (sunlit = 62%), Sun = 86° Cross-track uncertainty : 1.0 mas = 2 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.8 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#141 Note : FP:true Object is a Gaia mass determination target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia

Aladin Sky Atlas

Aladin Lite direct link (has Gaia overlay)