Cora»Occultation

2026-04-09 / UCAC4 371-082118 / (48) Doris

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Faustino Garcia	O+	CCD	T250	ES	GPS	02:50:30	02:52:07.35	02:52:44.88	02:54:31	2.660	2.660	37.53	135.1
2	show	Manuel Alfonso Coya Lozano, Juan Collada Bárcena	O+	CCD	M356	ES	GPS	02:51:35	02:52:06.663	02:53:01.679	02:53:35	2.011	2.011	55.02	198.1

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#206 : 6e7aa0e0-33ba-11f1-6999-5fdcbd9f070e [db: asteroids]

Using prediction 6e7aa0e0-33ba-11f1-6999-5fdcbd9f070e 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 = 2729.5, 30.6 km
Circular diameter = 195 km

From 2 chords (CCD)

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: 2026-04-09, 02:52 UT (JD = 2461139.619)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 936	None	11.890	297°, 61°	2.44375e6	17389.6	0.0°	None	None	not scaled	2016-01-04
# 1845	4.0	11.890	298°, 59°	2.44375e6	17389.6	0.0°	None	2017-09-21	210.0 +/- 23.0 km	2017-09-21

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] : 6e7aa0e0-33ba-11f1-6999-5fdcbd9f070e [asteroids] Occultation Date + Time : 2026-04-09 at 02:29:34 UT +/- 0.2 min [1] Object Designation : (48) Doris Orbit Class : MBA Star Designation : GDR3 4136346358407562752 Star Coordinates (ICRF) : RA = 17 10 38.5546, DE = -15 57 18.282 [2] Star Magnitudes : G = 14.15 mag, RP = 13.36 mag, BP = 14.82 mag Object Magnitude : V = 12.7 mag Estimated Magnitude Drop : 0.3 mag Estimated Max. Duration : 62.2 sec Object Mean Diameter : 221.8 km (src: astorb) Speed of the shadow : 3.6 km/s Elongation to Moon & Sun : 22° (sunlit = 61%), Sun = 121° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#206 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] : 6e7aa0e0-33ba-11f1-6999-5fdcbd9f070e [asteroids]

 Occultation Date + Time   : 2026-04-09 at 02:29:34 UT +/- 0.2 min  [1]
 Object Designation        : (48) Doris
 Orbit Class               : MBA
 Star Designation          : GDR3 4136346358407562752
 Star Coordinates (ICRF)   : RA = 17 10 38.5546, DE = -15 57 18.282  [2]
 Star Magnitudes           : G = 14.15 mag, RP = 13.36 mag, BP = 14.82 mag
 Object Magnitude          : V = 12.7 mag
 Estimated Magnitude Drop  : 0.3 mag
 Estimated Max. Duration   : 62.2 sec
 Object Mean Diameter      : 221.8 km  (src: astorb)
 Speed of the shadow       : 3.6 km/s
 Elongation to Moon & Sun  : 22° (sunlit = 61%), Sun = 121°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#206
 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

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)