Cora»Occultation

2020-01-06 / TYC 0300-00301-1 / (6) Hebe

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Pietro Baruffetti	O+	VID	M300	IT	GPS++	01:29:30	01:33:24.77	01:33:28.49	01:35:30	0.02	0.02	3.72	67.0
2	show	Michele Bigi	O+	VID	M200	IT	GPS++	01:29:30	01:33:24.90	01:33:28.50	01:35:30	0.04	0.04	3.60	64.8
3	show	Eric Frappa	O+	VID	L61	FR	GPS++	01:32:02	01:33:11.53	01:33:22.08	01:34:10	0.40	0.16	10.55	189.9
4	show	David Vizzoni	O+	CCD	M200	IT	GPS	01:30:01	01:33:30.00	01:33:40.29	01:37:00	0.08	0.08	10.29	185.2
5	show	Guy Brabant	O+	VID	M203	FR	GPS++	01:27:58	01:33:18.86	01:33:29.98	01:38:05	0.24	0.16	11.12	200.2
6	show	Alberto Ossola	O+	VID	M230	CH	GPS++	01:30:55	01:33:30.74	01:33:39.49	01:36:05	0.04	0.09	8.75	157.5
7	show	Andrea Manna	O+	VID	M200	CH	GPS++	01:24:55	01:33:31.71	01:33:39.45	01:37:13	0.02	0.02	7.74	139.3
8	show	Stefano Sposetti	O+	VID	M280	CH	GPS++	01:26:50	01:33:32.22	01:33:39.66	01:36:58	0.01	0.01	7.44	133.9
9	show	Alfonso Noschese	O-	CCD	M300	IT		01:29:27			01:37:26
10	show	Gerard Vaudescal	O-	VID	M305	FR		01:32:09			01:34:07
11	show	Alessandro Marchini	O-	CCD	M300	IT		01:32:01			01:35:01
12	show	Mauro Bachini	O-	CCD	M250	IT		01:33:14			01:33:44
13	show	Matthieu Conjat	O-	CCD	M400	FR		01:31:53			01:34:44

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

13 observations found in db: euraster

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

JPL#100 (23-01-08) : 476a09d1-f00b-4478-b49a-f35a8cda8c6d [db: observed]

Using prediction 476a09d1-f00b-4478-b49a-f35a8cda8c6d for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result:
Size = 220 x 186 km
a',b' = 109.9, 92.8 km
X0,Y0 = 232.2, 87.3 km
Mean diameter = 202 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: 2020-01-06, 01:33 UT (JD = 2458854.567)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 106	None	7.274	340°, 42°	2.43653685854e6	22317.7	0.0°	None	2011-04-11	180.0 +/- 40.0 km	2011-03-26
# 714	4.0	7.274	342°, 50°	2.434569e6	24285.6	0.0°	None	2018-02-08	196.0 +/- 6.0 km	2018-02-08

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] : 476a09d1-f00b-4478-b49a-f35a8cda8c6d [observed] Occultation Date + Time : 2020-01-06 at 01:37:02 UT +/- 0.03 min [1] Object Designation : (6) Hebe Star Designation : GDR3 3712151645661926912 Star Coordinates (ICRF) : RA = 13 24 59.7583, DE = +01 49 24.168 [2] Star Magnitudes : G = 10.39 mag, RP = 9.6 mag, BP = 11.06 mag Object Magnitude : V = 11.04 mag Estimated Magnitude Drop : 1.1 mag Estimated Max. Duration : 10.3 sec Object Mean Diameter : 185 km (src: astorb+H10) Speed of the shadow : 18.0 km/s Elongation to Moon & Sun : 151° (sunlit = 76%), Sun = 86° Cross-track uncertainty : 11.3 mas = 22 km = 0.12 path-width (1-sig) RUWE and duplicate source : 1.2 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#100 (23-01-08) Object is a Gaia mass determination target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 476a09d1-f00b-4478-b49a-f35a8cda8c6d [observed]

 Occultation Date + Time   : 2020-01-06 at 01:37:02 UT +/- 0.03 min  [1]
 Object Designation        : (6) Hebe
 Star Designation          : GDR3 3712151645661926912
 Star Coordinates (ICRF)   : RA = 13 24 59.7583, DE = +01 49 24.168  [2]
 Star Magnitudes           : G = 10.39 mag, RP = 9.6 mag, BP = 11.06 mag
 Object Magnitude          : V = 11.04 mag
 Estimated Magnitude Drop  : 1.1 mag
 Estimated Max. Duration   : 10.3 sec
 Object Mean Diameter      : 185 km  (src: astorb+H10)
 Speed of the shadow       : 18.0 km/s
 Elongation to Moon & Sun  : 151° (sunlit = 76%), Sun = 86°
 Cross-track uncertainty   : 11.3 mas = 22 km = 0.12 path-width (1-sig)
 RUWE and duplicate source : 1.2 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#100 (23-01-08)

 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

(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)

2020-01-06 / TYC 0300-00301-1 / (6) Hebe

Sky projection (artificial light) for occ. time: 2020-01-06, 01:33 UT (JD = 2458854.567)