2024-10-08 / HIP 102217 / (16) Psyche

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Orlando Benítez Sánchez, Juan Carlos Alcazar	O+	VID	L90	ES	GPS	21:45:14	21:47:05.47	21:47:28.20	21:48:15	0.03	0.02	22.73	143.2
2	show	Serge Dramonis	O+	VID	M400	GR	GPS	21:48:00	21:53:44.04	21:54:0.67	21:56:30	0.02	0.02	16.63	104.8
3	show	Alexandros Siakas, S. Tsavdaridis	O+	CCD	T406	GR	GPS	21:51:00	21:53:19.034	21:53:42.380	21:55:00	0.01	0.01	23.35	147.1

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

3 observations found in db: sodis

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

JPL#92 : 7f0ddf40-ddb5-11f0-547e-3e24ff7fe8db [db: observed]

JPL#91 : 54a6d9a0-6e4e-11ef-4e13-dbca3fe80cdf [db: special]

Using prediction 7f0ddf40-ddb5-11f0-547e-3e24ff7fe8db for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: Size = 486 x 179 km a',b' = 243.2, 89.4 km X0,Y0 = 381.5, 11.5 km Mean diameter = 295 km From 3 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: 2024-10-08, 21:47 UT (JD = 2460592.408)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 113	None	4.196	32°, -7°	2.435467e6	25125.4	0.0°	size from AO is 213+/-15 km	2013-07-23	211.0 +/- 21.0 km	2011-03-27
# 1806	4.0	4.196	36°, -10°	2.4573574472e6	3235.0	0.0°	nonconvex model, more details at http://observations.lam.fr/astero/	2018-11-02	224.0 +/- 5.0 km	2018-11-01

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] : 7f0ddf40-ddb5-11f0-547e-3e24ff7fe8db [observed] Occultation Date + Time : 2024-10-08 at 21:41:33 UT +/- 0.02 min [1] Object Designation : (16) Psyche Orbit Class : MBA Star Designation : GDR3 6861426348052317440 Star Coordinates (ICRF) : RA = 20 42 39.7788, DE = -18 06 34.716 [2] Star Magnitudes : G = 7.27 mag, RP = 6.99 mag, BP = 7.42 mag Object Magnitude : V = 10.86 mag Estimated Magnitude Drop : 3.6 mag Estimated Max. Duration : 39.9 sec Object Mean Diameter : 253.2 km (src: astorb) Speed of the shadow : 6.3 km/s Elongation to Moon & Sun : 45° (sunlit = 31%), Sun = 112° Cross-track uncertainty : 1.7 mas = 2 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 1 (0:false, 1:true) Ephemeris Reference : JPL#92 Note : FP:true Object is a Gaia mass determination target ! [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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