2024-07-15 / UCAC4 505-089157 / (754) Malabar

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Javier De Elías	O+	VID	M203	ES	GPS	22:22:45	22:24:31.1	22:24:38.3	22:27:05	1.0	0.3	7.20	95.0
2	show	Oscar Canales, Fernando Campos	O+	CCD	M230	ES	GPS	22:21:12	22:24:11.33	22:24:17.23	22:27:12	0.47	0.47	5.90	77.9
3	show	Oscar Canales	O+	CCD	M280	ES	GPS	22:21:14	22:24:10.29	22:24:17.03	22:27:14	0.31	0.31	6.74	89.0
4	show	Peter Delincak	O+	VID	M400	SK	NTP	22:20:47	22:22:04.80	22:22:11.30	22:24:10	0.14	0.14	6.50	85.8
5	show	Petr Zeleny	O+	VID	M250	CZ	GPS	22:20:00	22:22:08.6	22:22:15.9	22:24:33	0.4	0.4	7.30	96.4
6	show	Leszek Benedyktowicz	O+	VID	M200	PL	GPS	22:20:14	22:21:58.600	22:22:06.100	22:23:49	0.3	0.3	7.50	99.0
7	show	Daniel Blazewicz	O+	VID	M350	PL	GPS	22:20:36	22:21:55.59	22:22:02.49	22:23:42	0.10	0.10	6.90	91.1
8	show	Marcin Filipek	O+	VID	M250	PL	GPS	22:21:45	22:21:58.43	22:22:05.25	22:22:20	0.13	0.10	6.82	90.0

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

8 observations found in db: sodis

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

JPL#137 : 068a2060-ddb5-11f0-547e-9ea0bf8d3df1 [db: observed]

Using prediction 068a2060-ddb5-11f0-547e-9ea0bf8d3df1 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: Size = 107 x 66 km a',b' = 53.7, 33.2 km X0,Y0 = 1410.4, 24.0 km Mean diameter = 85 km From 8 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: 2024-07-15, 22:23 UT (JD = 2460507.433)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 5733	1.0	11.737	334°, -38°	2.457251e6	3256.4	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

Map with groundtrack and observer stations

Event Details

Occultation UUID [and DB] : 068a2060-ddb5-11f0-547e-9ea0bf8d3df1 [observed] Occultation Date + Time : 2024-07-15 at 22:24:47 UT +/- 0.01 min [1] Object Designation : (754) Malabar Orbit Class : MBA Star Designation : GDR3 4504025039616552576 Star Coordinates (ICRF) : RA = 18 45 33.7536, DE = +10 58 46.209 [2] Star Magnitudes : G = 14.65 mag, RP = 14.05 mag, BP = 15.06 mag Object Magnitude : V = 14.21 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 6.6 sec Object Mean Diameter : 87.6 km (src: astorb) Speed of the shadow : 13.2 km/s Elongation to Moon & Sun : 65° (sunlit = 69%), Sun = 145° Cross-track uncertainty : 0.4 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#137 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

Aladin Sky Atlas

Aladin Lite direct link (has Gaia overlay)