Collaborative Occultation Resources and Archive (CORA)

2025-03-07 / UCAC4 532-048716 / (282) Clorinde

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jiri Kubanek	O+	VID	M303	CZ	GPS	23:38:37	23:40:03.88	23:40:09.58	23:41:37	0.15	0.15	5.70	45.0
2	show	Michal Rottenborn	O+	VID	M254	CZ	GPS	23:38:08	23:40:04.6	23:40:10.48	23:42:08	0.2	0.15	5.88	46.5
3	show	Zdenek Sikac	O-	VID	T150	CZ	NTP	23:38:00			23:42:00

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#110 : cd599610-856b-11ef-78cd-932bd6d890b8 [db: asteroids]

Using prediction cd599610-856b-11ef-78cd-932bd6d890b8 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 = -2651.3, 18.0 km
Circular diameter = 48 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: 2025-03-07, 23:40 UT (JD = 2460742.486)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 5005	1.0	49.365	353°, -66°	2.457229e6	3513.5	0.0°	None	2020-10-05	not scaled	2019-10-23
# 5006	1.0	49.363	184°, -47°	2.457229e6	3513.5	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] : cd599610-856b-11ef-78cd-932bd6d890b8 [asteroids] Occultation Date + Time : 2025-03-07 at 23:38:35 UT +/- 0.01 min [1] Object Designation : (282) Clorinde Orbit Class : MBA Star Designation : GDR3 0620464929929545344 Star Coordinates (ICRF) : RA = 09 36 51.7506, DE = +16 21 12.073 [2] Star Magnitudes : G = 14.49 mag, RP = 13.96 mag, BP = 14.85 mag Object Magnitude : V = 14.23 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 4.9 sec Object Mean Diameter : 39.0 km (src: astorb) Speed of the shadow : 7.9 km/s Elongation to Moon & Sun : 47° (sunlit = 64%), Sun = 153° Cross-track uncertainty : 0.3 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.05 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] : cd599610-856b-11ef-78cd-932bd6d890b8 [asteroids]

 Occultation Date + Time   : 2025-03-07 at 23:38:35 UT +/- 0.01 min  [1]
 Object Designation        : (282) Clorinde
 Orbit Class               : MBA
 Star Designation          : GDR3 0620464929929545344
 Star Coordinates (ICRF)   : RA = 09 36 51.7506, DE = +16 21 12.073  [2]
 Star Magnitudes           : G = 14.49 mag, RP = 13.96 mag, BP = 14.85 mag
 Object Magnitude          : V = 14.23 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 4.9 sec
 Object Mean Diameter      : 39.0 km  (src: astorb)
 Speed of the shadow       : 7.9 km/s
 Elongation to Moon & Sun  : 47° (sunlit = 64%), Sun = 153°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.05 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
09 36 51.751 +16 21 12.07 FoV: 29.96' +– × × Go to:
Aladin Lite direct link (has Gaia overlay)