Cora»Occultation

2014-03-08 / 4UC 514-024427 / (51) Nemausa

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Carles Schnabel	O+	VID	M250	ES	GPS++	18:53:30	18:54:20.55	18:54:36.34	18:55:30	0.15	1.20	15.79	156.3
2	show	Ramon Naves	O+	CCD	M300	ES	NTP	18:53:32	18:54:26.22	18:54:42.13	18:58:34	0.10	0.10	15.91	157.5
3	show	C. Perello/A. Selva	O+	VID	M500	ES	GPS++	18:51:55	18:54:24.02	18:54:40.42	18:56:09	0.04	0.04	16.40	162.4
4	show	Joan Rovira	O+	VID	M250	ES	GPS++	18:50:00	18:54:25.14	18:54:42.10	19:00:00	0.04	0.04	16.96	167.9
5	show	Carlo Gualdoni	O+	VID	M250	IT	GPS++	18:55:23	18:55:36.26	18:55:52.61	18:56:18	0.13	0.17	16.35	161.9
6	show	Alberto Ossola	O+	VID	M230	CH	GPS++	18:54:00	18:55:36.79	18:55:50.87	18:58:00	0.33	0.33	14.08	139.4
7	show	Stefano Sposetti	O+	VID	M280	CH	GPS++	18:53:12	18:55:40.22	18:55:51.98	18:58:03	0.15	0.15	11.76	116.4
8	show	Gerhard Dangl	O+	VID	M254	AT	GPS++	18:54:47	18:56:29.85	18:56:46.49	18:59:05	0.17	0.17	16.64	164.7
9	show	P. Delincak et al	O-	VID	M600	SK		18:54:30			19:01:01
10	show	Karel Halir	O-	VID	M507	CZ		18:54:11			18:59:15
11	show	Jan Manek	O-	VID	M203	CZ		18:55:56			18:58:15
12	show	Peter Lindner	O-	VID	M305	DE		18:55:31			19:00:04
13	show	Henk De Groot	O-	VID	M356	NL		18:52:21			18:59:20
14	show	Wolfgang Rothe	O-	VID	M200	DE		18:54:01			19:00:04

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

14 observations found in db: euraster

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

JPL#145 : d6fa28ed-abc2-47b1-b526-87510526c8e0 [db: observed]

Using prediction d6fa28ed-abc2-47b1-b526-87510526c8e0 for map and profile fit

Get observations as KML file (reduced site location resolution)

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result:
Size = 163 x 141 km
a',b' = 81.5, 70.3 km
X0,Y0 = 1475.3, 30.0 km
Mean diameter = 151 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: 2014-03-08, 18:53 UT (JD = 2456725.287)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 1065	None	7.785	169°, -62°	2.438055e6	18670.3	0.0°	None	None	not scaled	2016-01-04
# 1818	4.0	7.785	172°, -69°	2.438055e6	18670.3	0.0°	None	2017-06-19	147.0 +/- 3.0 km	2017-06-07

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] : d6fa28ed-abc2-47b1-b526-87510526c8e0 [observed] Occultation Date + Time : 2014-03-08 at 18:52:15 UT +/- 0.01 min [1] Object Designation : (51) Nemausa Orbit Class : MBA Star Designation : GDR3 3332162866646994816 Star Coordinates (ICRF) : RA = 06 23 53.3714, DE = +12 41 48.983 [2] Star Magnitudes : G = 12.38 mag, RP = 11.53 mag, BP = 13.14 mag Object Magnitude : V = 12.01 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 15.0 sec Object Mean Diameter : 148 km (src: astorb) Speed of the shadow : 9.9 km/s Elongation to Moon & Sun : 17° (sunlit = 52%), Sun = 107° Cross-track uncertainty : 1.7 mas = 2 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#145 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] : d6fa28ed-abc2-47b1-b526-87510526c8e0 [observed]

 Occultation Date + Time   : 2014-03-08 at 18:52:15 UT +/- 0.01 min  [1]
 Object Designation        : (51) Nemausa
 Orbit Class               : MBA
 Star Designation          : GDR3 3332162866646994816
 Star Coordinates (ICRF)   : RA = 06 23 53.3714, DE = +12 41 48.983  [2]
 Star Magnitudes           : G = 12.38 mag, RP = 11.53 mag, BP = 13.14 mag
 Object Magnitude          : V = 12.01 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 15.0 sec
 Object Mean Diameter      : 148 km  (src: astorb)
 Speed of the shadow       : 9.9 km/s
 Elongation to Moon & Sun  : 17° (sunlit = 52%), Sun = 107°
 Cross-track uncertainty   : 1.7 mas = 2 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#145

 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)

2014-03-08 / 4UC 514-024427 / (51) Nemausa

Sky projection (artificial light) for occ. time: 2014-03-08, 18:53 UT (JD = 2456725.287)