2024-09-24 / UCAC4 414-118812 / (386) Siegena

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jiri Kubanek	O+	VID	M303	CZ	GPS	18:42:40	18:44:02.5	18:44:16.4	18:44:19	0.3	0.8	13.90	177.9
2	show	Zdenek Moravec	O+	CCD	T600	CZ	GPS	18:41:37	18:43:58.0	18:44:13.49	18:45:36	0.2	0.15	15.49	198.3

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#140 : 043fc290-ddb2-11f0-547e-dc4af5f9daaa [db: observed]

JPL#140 : 7161cfa0-ddb5-11f0-547e-5c0abfe794db [db: observed]

Using prediction 7161cfa0-ddb5-11f0-547e-5c0abfe794db for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: X0,Y0 = -3064.4, 22.6 km Circular diameter = 197 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: 2024-09-24, 18:44 UT (JD = 2460578.281)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 447	None	9.765	289°, 25°	2.444019e6	16559.3	0.0°	None	None	not scaled	2012-07-30
# 1815	4.0	9.765	287°, 25°	2.444019e6	16559.3	0.0°	None	2017-06-19	168.0 +/- 5.0 km	2017-06-19

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] : 7161cfa0-ddb5-11f0-547e-5c0abfe794db [observed] Occultation Date + Time : 2024-09-24 at 18:48:47 UT +/- 0.01 min [1] Object Designation : (386) Siegena Orbit Class : MBA Star Designation : GDR3 4204851499100496768 Star Coordinates (ICRF) : RA = 19 17 48.7093, DE = -07 22 11.530 [2] Star Magnitudes : G = 13.91 mag, RP = 13.28 mag, BP = 14.38 mag Object Magnitude : V = 12.68 mag Estimated Magnitude Drop : 0.3 mag Estimated Max. Duration : 12.9 sec Object Mean Diameter : 165.0 km (src: astorb) Speed of the shadow : 12.8 km/s Elongation to Moon & Sun : 153° (sunlit = 50%), Sun = 107° 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#140 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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