Cora»Occultation

2026-04-08 / UCAC4 446-057973 / (237) Coelestina

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Peter Nosal, Paula Libic	O+	VID	M200	SK	NTP	01:29:25	01:29:58.700	01:30:02.800	01:31:18	0.500	0.400	4.10	42.2
2	show	Zdenek Sikac	O+	VID	T150	CZ	GPS	01:29:39	01:30:39.2	01:30:41.7	01:31:40	0.400	0.400	2.50	25.8
3	show	Zdenek Moravec	O+	CCD	T600	CZ	GPS	01:29:42	01:30:39.39	01:30:43.02	01:31:41	0.180	0.100	3.63	37.4

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

3 observations found in db: sodis

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

JPL#75 : edc600f0-33c0-11f1-6999-4fd37e9756c5 [db: asteroids]

Using prediction edc600f0-33c0-11f1-6999-4fd37e9756c5 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 = 59 x 34 km
a',b' = 29.7, 17.2 km
X0,Y0 = -1630.6, -98.1 km
Mean diameter = 45 km

From 3 chords (CCD,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: 2026-04-08, 01:29 UT (JD = 2461138.562)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 1218	None	29.175	230°, 30°	2.450875e6	10263.6	0.0°	None	None	not scaled	2016-01-04
# 1219	None	29.176	42°, 14°	2.450875e6	10263.6	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

Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : edc600f0-33c0-11f1-6999-4fd37e9756c5 [asteroids] Occultation Date + Time : 2026-04-08 at 01:29:55 UT +/- 0.01 min [1] Object Designation : (237) Coelestina Orbit Class : MBA Star Designation : GDR3 3652833955415837696 Star Coordinates (ICRF) : RA = 14 23 20.0606, DE = -00 49 57.384 [2] Star Magnitudes : G = 14.38 mag, RP = 13.88 mag, BP = 14.7 mag Object Magnitude : V = 13.05 mag Estimated Magnitude Drop : 0.3 mag Estimated Max. Duration : 4.0 sec Object Mean Diameter : 41.1 km (src: astorb) Speed of the shadow : 10.3 km/s Elongation to Moon & Sun : 54° (sunlit = 70%), Sun = 160° Cross-track uncertainty : 2.0 mas = 2 km = 0.06 path-width (1-sig) RUWE and duplicate source : 1.1 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#75 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : edc600f0-33c0-11f1-6999-4fd37e9756c5 [asteroids]

 Occultation Date + Time   : 2026-04-08 at 01:29:55 UT +/- 0.01 min  [1]
 Object Designation        : (237) Coelestina
 Orbit Class               : MBA
 Star Designation          : GDR3 3652833955415837696
 Star Coordinates (ICRF)   : RA = 14 23 20.0606, DE = -00 49 57.384  [2]
 Star Magnitudes           : G = 14.38 mag, RP = 13.88 mag, BP = 14.7 mag
 Object Magnitude          : V = 13.05 mag
 Estimated Magnitude Drop  : 0.3 mag
 Estimated Max. Duration   : 4.0 sec
 Object Mean Diameter      : 41.1 km  (src: astorb)
 Speed of the shadow       : 10.3 km/s
 Elongation to Moon & Sun  : 54° (sunlit = 70%), Sun = 160°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 1.1 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#75
 Note                      : FP:true

 
 [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)