Collaborative Occultation Resources and Archive (CORA)

2025-01-18 / UCAC4 643-038560 / (709) Fringilla

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Daniel Blazewicz	O+	VID	M350	PL	GPS	00:42:17	00:45:30.2	00:45:35.2	00:49:00	0.2	0.2	5.00	67.0
2	show	Marcin Filipek	O+	VID	M250	PL	GPS	00:45:05	00:45:33.13	00:45:36.58	00:46:05	0.09	0.09	3.45	46.2

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#110 : 9a717980-8623-11ef-78cd-cabf7fea2d91 [db: asteroids]

Using prediction 9a717980-8623-11ef-78cd-cabf7fea2d91 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 = 275.7, 37.7 km
Circular diameter = 74 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: 2025-01-18, 00:45 UT (JD = 2460693.531)

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	3293.5	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] : 9a717980-8623-11ef-78cd-cabf7fea2d91 [asteroids] Occultation Date + Time : 2025-01-18 at 00:50:10 UT +/- 0.01 min [1] Object Designation : (709) Fringilla Orbit Class : MBA Star Designation : GDR3 0944991456226370432 Star Coordinates (ICRF) : RA = 06 36 09.5097, DE = +38 35 53.081 [2] Star Magnitudes : G = 14.98 mag, RP = 14.54 mag, BP = 15.26 mag Object Magnitude : V = 13.83 mag Estimated Magnitude Drop : 0.3 mag Estimated Max. Duration : 7.2 sec Object Mean Diameter : 96.6 km (src: astorb) Speed of the shadow : 13.4 km/s Elongation to Moon & Sun : 70° (sunlit = 83%), Sun = 154° Cross-track uncertainty : 1.0 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.04 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] : 9a717980-8623-11ef-78cd-cabf7fea2d91 [asteroids]

 Occultation Date + Time   : 2025-01-18 at 00:50:10 UT +/- 0.01 min  [1]
 Object Designation        : (709) Fringilla
 Orbit Class               : MBA
 Star Designation          : GDR3 0944991456226370432
 Star Coordinates (ICRF)   : RA = 06 36 09.5097, DE = +38 35 53.081  [2]
 Star Magnitudes           : G = 14.98 mag, RP = 14.54 mag, BP = 15.26 mag
 Object Magnitude          : V = 13.83 mag
 Estimated Magnitude Drop  : 0.3 mag
 Estimated Max. Duration   : 7.2 sec
 Object Mean Diameter      : 96.6 km  (src: astorb)
 Speed of the shadow       : 13.4 km/s
 Elongation to Moon & Sun  : 70° (sunlit = 83%), Sun = 154°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.04 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
06 36 9.510 +38 35 53.08 FoV: 29.96' +– × × Go to:
Aladin Lite direct link (has Gaia overlay)