2024-07-07 / UCAC4 411-087659 / (589) Croatia

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Ferran Casarramona	O+	VID	M200	ES	GPS	21:38:02	21:39:43.6	21:39:45.3	21:42:01	0.2	0.3	1.70	21.9
2	show	Jesús Delgado	O+	CCD	M280	ES	GPS	21:38:11	21:39:58.70	21:40:6.2	21:41:59	0.8	0.8	7.50	96.8

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#121 : f0cd8d20-ddb4-11f0-547e-9973d877d1f2 [db: observed]

Using prediction f0cd8d20-ddb4-11f0-547e-9973d877d1f2 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: X0,Y0 = 830.5, 19.1 km Circular diameter = 107 km From 2 chords (VID,CCD) Chords to ignore: Fill: Grid: Show (close) miss chords: 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: 2024-07-07, 21:38 UT (JD = 2460499.401)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 4054	1.0	24.939	220°, -39°	2.449829e6	10670.4	0.0°	None	2019-09-26	not scaled	2019-05-07
# 4055	1.0	24.939	35°, -56°	2.449829e6	10670.4	0.0°	None	2019-09-26	not scaled	2019-05-07

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

Map with groundtrack and observer stations

Event Details

Occultation UUID [and DB] : f0cd8d20-ddb4-11f0-547e-9973d877d1f2 [observed] Occultation Date + Time : 2024-07-07 at 21:37:11 UT +/- 0.0 min [1] Object Designation : (589) Croatia Orbit Class : MBA Star Designation : GDR3 4251864073778458880 Star Coordinates (ICRF) : RA = 18 46 18.8413, DE = -07 48 39.103 [2] Star Magnitudes : G = 14.2 mag, RP = 13.73 mag, BP = 14.5 mag Object Magnitude : V = 13.98 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 6.8 sec Object Mean Diameter : 88.0 km (src: astorb) Speed of the shadow : 12.9 km/s Elongation to Moon & Sun : 147° (sunlit = 4%), Sun = 164° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#121 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

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