Cora»Occultation

2025-01-16 / UCAC4 644-038283 / (709) Fringilla

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Matthieu Conjat	O+	VID	T400	FR	GPS	17:54:00	17:55:25.530	17:55:34.760	17:56:24	0.11	0.14	9.23	125.5
2	show	Matthieu Conjat	O+	VID	T400	FR	GPS	17:54:00	17:55:29.780	17:55:31.380	17:56:24	0.03	0.05	1.60	21.8
3	show	Alberto Ossola	O+	VID	M230	CH	GPS	17:54:17	17:55:07.2	17:55:17.7	17:56:15	0.6	0.5	10.50	142.8
4	show	Alberto Ossola	O+	VID	M230	CH	GPS	17:54:17	17:55:11.0	17:55:14.35	17:56:15	0.3	0.16	3.35	45.6
5	show	Andrea Manna	O+	VID	M200	CH	GPS	17:53:47	17:55:06.5	17:55:16.3	17:57:20	0.3	0.3	9.80	133.3
6	show	Andrea Manna	O+	VID	M200	CH	GPS	17:53:47	17:55:09.6	17:55:12.82	17:57:20	0.2	0.16	3.22	43.8
7	show	Stefano Sposetti	O+	VID	M420	CH	GPS	17:52:10	17:55:05.9	17:55:11.9	17:58:00	0.4	0.3	6.00	81.6
8	show	Stefano Sposetti	O+	VID	M420	CH	GPS	17:52:10	17:55:09.2	17:55:15.9	17:58:00	0.3	0.3	6.70	91.1
9	show	Stefano Sposetti, Gastone Lavagno	O+	VID	M200	CH	GPS	17:50:45	17:55:05.1	17:55:10.78	17:58:00	0.2	0.18	5.68	77.2
10	show	Stefano Sposetti, Gastone Lavagno	O+	VID	M200	CH	GPS	17:50:45	17:55:08.86	17:55:14.9	17:58:00	0.14	0.3	6.04	82.1
11	show	Carsten Ziolek	O+	VID	M356	CH	GPS	17:54:35	17:54:59.752	17:55:09.900	17:55:34	0.069	0.069	10.15	138.0
12	show	Carsten Ziolek	O+	VID	M356	CH	GPS	17:54:35	17:55:03.386	17:55:06.149	17:55:34	0.025	0.025	2.76	37.5
13	show	Björn Kattentidt	O+	VID	M280	DE	GPS	17:52:51	17:54:42.521	17:54:49.110	17:55:55	0.017	0.017	6.59	89.6
14	show	Björn Kattentidt	O+	VID	M280	DE	GPS	17:52:51	17:54:46.310	17:54:52.519	17:55:55	0.017	0.017	6.21	84.5
15	show	Jiri Kubanek, Simona Kubankova	O+	VID	M200	DE	GPS	17:53:38	17:54:40.23	17:54:46.97	17:56:24	0.18	0.10	6.74	91.7
16	show	Jiri Kubanek, Simona Kubankova	O+	VID	M200	DE	GPS	17:53:38	17:54:44.01	17:54:50.72	17:56:24	0.10	0.15	6.71	91.3

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

16 observations found in db: sodis

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

JPL#110 : 9aa5cff0-8623-11ef-78cd-1efcbfd7b2cb [db: asteroids]

Using prediction 9aa5cff0-8623-11ef-78cd-1efcbfd7b2cb 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:
Size = 327 x 35 km
a',b' = 163.5, 17.5 km
X0,Y0 = 1351.9, 8.6 km
Mean diameter = 107 km

From 16 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: 2025-01-16, 17:55 UT (JD = 2460692.247)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 5703	1.0	52.136	128°, -53°	2.4574e6	3292.2	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] : 9aa5cff0-8623-11ef-78cd-1efcbfd7b2cb [asteroids] Occultation Date + Time : 2025-01-16 at 17:51:41 UT +/- 0.01 min [1] Object Designation : (709) Fringilla Orbit Class : MBA Star Designation : GDR3 0944967984227916160 Star Coordinates (ICRF) : RA = 06 37 26.8894, DE = +38 41 57.708 [2] Star Magnitudes : G = 12.7 mag, RP = 12.21 mag, BP = 13.01 mag Object Magnitude : V = 13.79 mag Estimated Magnitude Drop : 1.4 mag Estimated Max. Duration : 7.1 sec Object Mean Diameter : 97 km (src: astorb) Speed of the shadow : 13.6 km/s Elongation to Moon & Sun : 54° (sunlit = 92%), Sun = 155° Cross-track uncertainty : 1.0 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 2.4 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#110 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 9aa5cff0-8623-11ef-78cd-1efcbfd7b2cb [asteroids]

 Occultation Date + Time   : 2025-01-16 at 17:51:41 UT +/- 0.01 min  [1]
 Object Designation        : (709) Fringilla
 Orbit Class               : MBA
 Star Designation          : GDR3 0944967984227916160
 Star Coordinates (ICRF)   : RA = 06 37 26.8894, DE = +38 41 57.708  [2]
 Star Magnitudes           : G = 12.7 mag, RP = 12.21 mag, BP = 13.01 mag
 Object Magnitude          : V = 13.79 mag
 Estimated Magnitude Drop  : 1.4 mag
 Estimated Max. Duration   : 7.1 sec
 Object Mean Diameter      : 97 km  (src: astorb)
 Speed of the shadow       : 13.6 km/s
 Elongation to Moon & Sun  : 54° (sunlit = 92%), Sun = 155°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 2.4 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#110

 
 [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

(If error 404: link not valid which means no data available)

Aladin Sky Atlas

Aladin Lite direct link (has Gaia overlay)

Collaborative Occultation Resources and Archive (CORA)

2025-01-16 / UCAC4 644-038283 / (709) Fringilla

Sky projection (artificial light) for occ. time: 2025-01-16, 17:55 UT (JD = 2460692.247)