2023-09-28 / UCAC4 363-079582 / (45) Eugenia

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Karel Halir	O+	VID	M500	CZ	GPS	18:02:51	18:04:48.13	18:04:52.40	18:06:51	0.07	0.07	4.27	127.2
2	show	Jan Manek	O+	VID	M355	CZ	GPS	18:02:51	18:04:49.8	18:04:54.9	18:06:51	0.50	0.50	5.10	152.0
3	show	Marcin Filipek	O+	VID	M250	PL	GPS	18:04:38	18:04:59.0	18:05:03.0	18:05:25	0.4	0.6	4.00	119.2
4	show	Zdenek Moravec	O+	CCD	T432	CZ	GPS	18:03:49	18:04:45.8	18:04:53.1	18:05:48	0.2	0.2	7.30	217.5
5	show	Anna Marciniak	O+	CCD	M350	PL	GPS	18:03:49	18:04:46.900	18:04:53.800	18:06:25	0.6	0.6	6.90	205.6

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

5 observations found in db: sodis

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

JPL#148 : 30c4eff0-ddb4-11f0-547e-f6c23fee59c6 [db: observed]

Using prediction 30c4eff0-ddb4-11f0-547e-f6c23fee59c6 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: Size = 254 x 124 km a',b' = 126.8, 62.0 km X0,Y0 = -1330.9, 7.9 km Mean diameter = 177 km From 5 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: 2023-09-28, 18:03 UT (JD = 2460216.252)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 134	None	5.699	124°, -33°	2.440381e6	19835.3	0.0°	None	2013-09-06	172.0 +/- 16.0 km	2013-09-03
# 1812	4.0	5.699	127°, -35°	2.440381e6	19835.3	0.0°	None	2017-06-19	188.0 +/- 4.0 km	2017-06-07

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] : 30c4eff0-ddb4-11f0-547e-f6c23fee59c6 [observed] Occultation Date + Time : 2023-09-28 at 18:04:06 UT +/- 0.0 min [1] Object Designation : (45) Eugenia Orbit Class : MBA Star Designation : GDR3 4132566684101458432 Star Coordinates (ICRF) : RA = 16 50 43.7401, DE = -17 34 01.497 [2] Star Magnitudes : G = 14.0 mag, RP = 13.05 mag, BP = 14.93 mag Object Magnitude : V = 13.12 mag Estimated Magnitude Drop : 0.4 mag Estimated Max. Duration : 7.2 sec Object Mean Diameter : 214.6 km (src: astorb) Speed of the shadow : 29.8 km/s Elongation to Moon & Sun : 103° (sunlit = 99%), Sun = 68° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#148 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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