2023-04-03 / UCAC4 552-047740 / (1294) Antwerpia

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Peter Tickner	O+	VID	M360	GB	GPS	20:27:54	20:30:49.78	20:30:52.5	20:32:53	0.17	0.3	2.72	23.7
2	show	Henk de Groot	O+	VID	M350	NL	GPS	20:28:29	20:29:58.7	20:30:02.6	20:30:52	0.6	0.3	3.90	33.9

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#79 : 834afea0-ddb3-11f0-547e-f62bbfd64c3d [db: observed]

Using prediction 834afea0-ddb3-11f0-547e-f62bbfd64c3d for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: X0,Y0 = -180.6, -12.5 km Circular diameter = 68 km From 2 chords (VID) 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: 2023-04-03, 20:30 UT (JD = 2460038.354)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 1245	None	6.625	246°, -76°	2.450906e6	9132.4	0.0°	None	None	not scaled	2016-01-12
# 1246	None	6.625	128°, -66°	2.450906e6	9132.4	0.0°	None	None	not scaled	2016-01-12

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] : 834afea0-ddb3-11f0-547e-f62bbfd64c3d [observed] Occultation Date + Time : 2023-04-03 at 20:27:20 UT +/- 0.01 min [1] Object Designation : (1294) Antwerpia Orbit Class : MBA Star Designation : GDR3 3988062337621086080 Star Coordinates (ICRF) : RA = 10 51 44.4836, DE = +20 21 43.407 [2] Star Magnitudes : G = 14.91 mag, RP = 13.74 mag, BP = 16.36 mag Object Magnitude : V = 15.48 mag Estimated Magnitude Drop : 1.1 mag Estimated Max. Duration : 4.0 sec Object Mean Diameter : 34.7 km (src: astorb) Speed of the shadow : 8.7 km/s Elongation to Moon & Sun : 13° (sunlit = 95%), Sun = 141° Cross-track uncertainty : 1.0 mas = 1 km = 0.05 path-width (1-sig) RUWE and duplicate source : 1.08 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#79 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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