Cora»Occultation

2022-12-27 / 4UC 675-035793 / (624) Hektor

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Faustino Garcia	O+	CCD	M250	ES	GPS++	21:58:34	21:59:26.66	21:59:38.35	22:00:34	0.27	0.27	11.69	195.2
2	show	Martin Gutekunst	O+	CCD	L280	DE	NTP+	21:26:31	21:58:10.92	21:58:14.42	22:00:30	0.17	0.17	3.50	58.4
3	show	Manfred Simon	O+	CCD	M203	DE	NTP+	21:56:46	21:58:07.55	21:58:17.34	21:59:46	0.25	0.25	9.79	163.5
4	show	Gregor Krannich	O+	CCD	M350	DE	GPS++	21:56:31	21:58:05.04	21:58:16.42	21:59:41	0.08	0.08	11.38	190.0
5	show	Karl-Ludwig Bath	O+	CCD	M180	DE	NTP+	21:53:00	21:58:15.9	21:58:26.9	22:03:00	0.4	0.4	11.00	183.7
6	show	Eberhard Bredner	O+	VID	M254	DE	GPS++	21:50:00	21:58:03.3	21:58:14.2	22:00:00	0.3	0.3	10.90	182.0
7	show	Jiri Kubanek	O+	CCD	M200	CZ	GPS++	21:54:56	21:57:52.65	21:57:56.45	22:00:59	0.10	0.10	3.80	63.5
8	show	Jiri Kubanek	O+	CCD	M200	CZ	GPS++	21:54:56	21:57:57.45	21:57:58.35	22:00:59	0.10	0.10	0.90	15.0
9	show	C. Perello/A. Selva	O-	VID	M500	ES		21:57:03			22:01:02
10	show	Stefano Sposetti	O-	CCD	M420	CH		21:51:20			22:06:00
11	show	Peter Nosal	O-	CCD	M250	SK		21:55:22			21:59:40
12	show	Jiri Polak	O-	CCD	M303	CZ		21:55:58			21:59:58
13	show	Michal Rottenborn	O-	CCD	M254	CZ		21:54:57			22:00:57
14	show	Jiri Kubanek	O-	CCD	M303	CZ		21:54:57			22:00:56
15	show	Julia Perla	O-	CCD	M400	PL		21:56:28			21:58:30
16	show	Anna Marciniak	O-	CCD	M350	PL		21:47:38			22:07:14

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

16 observations found in db: euraster

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

JPL#120 (23-01-08) : 2be1c225-565b-4414-adc4-f8fa84dd0525 [db: observed]

Using prediction 2be1c225-565b-4414-adc4-f8fa84dd0525 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result:
Size = 239 x 134 km
a',b' = 119.3, 67.0 km
X0,Y0 = 64.6, 42.8 km
Mean diameter = 179 km

From 8 chords (VID,CCD)

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: 2022-12-27, 21:59 UT (JD = 2459941.415)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 232	None	6.921	333°, -31°	2.435957e6	23984.4	0.0°	None	2016-06-27	175.0 +/- 21.0 km	2016-06-27

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

Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 2be1c225-565b-4414-adc4-f8fa84dd0525 [observed] Occultation Date + Time : 2022-12-27 at 21:58:03 UT +/- 0.07 min [1] Object Designation : (624) Hektor Star Designation : GDR3 0208614743484828800 Star Coordinates (ICRF) : RA = 05 15 56.5038, DE = +44 48 09.006 [2] Star Magnitudes : G = 13.81 mag, RP = 13.27 mag, BP = 14.17 mag Object Magnitude : V = 14.64 mag Estimated Magnitude Drop : 1.2 mag Estimated Max. Duration : 6.7 sec Object Mean Diameter : 111 km (src: astorb+H10) Speed of the shadow : 16.7 km/s Elongation to Moon & Sun : 104° (sunlit = 27%), Sun = 154° Cross-track uncertainty : 2.3 mas = 7 km = 0.07 path-width (1-sig) RUWE and duplicate source : 1.03 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#120 (23-01-08) [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 2be1c225-565b-4414-adc4-f8fa84dd0525 [observed]

 Occultation Date + Time   : 2022-12-27 at 21:58:03 UT +/- 0.07 min  [1]
 Object Designation        : (624) Hektor
 Star Designation          : GDR3 0208614743484828800
 Star Coordinates (ICRF)   : RA = 05 15 56.5038, DE = +44 48 09.006  [2]
 Star Magnitudes           : G = 13.81 mag, RP = 13.27 mag, BP = 14.17 mag
 Object Magnitude          : V = 14.64 mag
 Estimated Magnitude Drop  : 1.2 mag
 Estimated Max. Duration   : 6.7 sec
 Object Mean Diameter      : 111 km  (src: astorb+H10)
 Speed of the shadow       : 16.7 km/s
 Elongation to Moon & Sun  : 104° (sunlit = 27%), Sun = 154°
 Cross-track uncertainty   : 2.3 mas = 7 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#120 (23-01-08)

 
 [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

(If error 404: link not valid which means no data available)

Aladin Sky Atlas

Aladin Lite direct link (has Gaia overlay)

Collaborative Occultation Resources and Archive (CORA)

2022-12-27 / 4UC 675-035793 / (624) Hektor

Sky projection (artificial light) for occ. time: 2022-12-27, 21:59 UT (JD = 2459941.415)