Cora»Occultation

2026-04-15 / UCAC4 588-014709 / (68) Leto

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Carles Schnabel	O+	VID	M400	ES	GPS	20:58:39	20:59:52.3	20:59:55.5	21:01:01	0.400	0.200	3.20	116.2
2	show	Jorge JUAN, Carles Schnabel	O+	VID	M410	ES	GPS	20:58:59	20:59:51.3	20:59:55.3	21:01:31	0.600	0.300	4.00	145.2
3	show	Antoni Selva, Carlos Perello	O+	VID	M500	ES	GPS	20:58:53	20:59:51.7	20:59:54.3	21:00:53	0.300	0.300	2.60	94.4

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#150 : 191b0c60-33bb-11f1-6999-fd14fc97d825 [db: asteroids]

Using prediction 191b0c60-33bb-11f1-6999-fd14fc97d825 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:
Ellipse profile fit was not successful. Trying circular fit.

Circular profile fit was not successful ...

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.

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Sky projection (artificial light) for occ. time: 2026-04-15, 20:59 UT (JD = 2461146.374)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 290	None	14.845	103°, 43°	2.443737e6	17409.4	0.0°	size from AO is 112+/-14 km	2013-07-23	148.0 +/- 25.0 km	2011-02-11

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] : 191b0c60-33bb-11f1-6999-fd14fc97d825 [asteroids] Occultation Date + Time : 2026-04-15 at 20:57:31 UT +/- 0.0 min [1] Object Designation : (68) Leto Orbit Class : MBA Star Designation : GDR3 0154091439328550912 Star Coordinates (ICRF) : RA = 04 54 23.1956, DE = +27 32 31.655 [2] Star Magnitudes : G = 14.23 mag, RP = 13.3 mag, BP = 15.13 mag Object Magnitude : V = 12.74 mag Estimated Magnitude Drop : 0.2 mag Estimated Max. Duration : 3.4 sec Object Mean Diameter : 122.6 km (src: astorb) Speed of the shadow : 36.3 km/s Elongation to Moon & Sun : 71° (sunlit = 4%), Sun = 50° Cross-track uncertainty : 1.0 mas = 2 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#150 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

Event Details

 Occultation UUID [and DB] : 191b0c60-33bb-11f1-6999-fd14fc97d825 [asteroids]

 Occultation Date + Time   : 2026-04-15 at 20:57:31 UT +/- 0.0 min  [1]
 Object Designation        : (68) Leto
 Orbit Class               : MBA
 Star Designation          : GDR3 0154091439328550912
 Star Coordinates (ICRF)   : RA = 04 54 23.1956, DE = +27 32 31.655  [2]
 Star Magnitudes           : G = 14.23 mag, RP = 13.3 mag, BP = 15.13 mag
 Object Magnitude          : V = 12.74 mag
 Estimated Magnitude Drop  : 0.2 mag
 Estimated Max. Duration   : 3.4 sec
 Object Mean Diameter      : 122.6 km  (src: astorb)
 Speed of the shadow       : 36.3 km/s
 Elongation to Moon & Sun  : 71° (sunlit = 4%), Sun = 50°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#150
 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

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