Cora»Occultation

2020-09-11 / 4UC 515-002167 / (102) Miriam

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jordi Marco	O+	CCD	M235	ES	NTP	23:46:00	23:49:49.08	23:50:00.68	23:53:04	0.15	0.10	11.60	31.3
2	show	Horia Costache	O+	CCD	M254	DE	NTP	23:41:14	23:43:46.82	23:44:01.72	23:46:05	0.65	0.64	14.90	40.2
3	show	Carles Schnabel	O-	VID	M400	ES		23:46:25			23:52:30
4	show	C. Perello/M. Aladid	O-	CCD	M500	ES		23:48:33			23:50:03
5	show	Antoni Selva	O-	VID	M200	ES		23:47:04			23:51:02
6	show	Roland Boninsegna	O-	VID	M400	BE		23:42:02			23:46:00
7	show	Jan-Maarten Winkel	O-	VID	M310	NL		23:40:45			23:44:45

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

7 observations found in db: euraster

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

JPL#102 (23-01-08) : f6a75a36-5501-453d-8612-048555918e68 [db: observed]

Using prediction f6a75a36-5501-453d-8612-048555918e68 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result:
Circular profile fit was not successful ...

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.

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : f6a75a36-5501-453d-8612-048555918e68 [observed] Occultation Date + Time : 2020-09-11 at 23:55:17 UT +/- 0.24 min [1] Object Designation : (102) Miriam Star Designation : GDR3 2586738238354438016 Star Coordinates (ICRF) : RA = 01 23 54.3567, DE = +12 52 39.867 [2] Star Magnitudes : G = 12.92 mag, RP = 12.38 mag, BP = 13.3 mag Object Magnitude : V = 11.98 mag Estimated Magnitude Drop : 0.4 mag Estimated Max. Duration : 30.8 sec Object Mean Diameter : 83 km (src: astorb+H10) Speed of the shadow : 2.7 km/s Elongation to Moon & Sun : 74° (sunlit = 34%), Sun = 145° Cross-track uncertainty : 8.7 mas = 6 km = 0.08 path-width (1-sig) RUWE and duplicate source : 3.63 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#102 (23-01-08) [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : f6a75a36-5501-453d-8612-048555918e68 [observed]

 Occultation Date + Time   : 2020-09-11 at 23:55:17 UT +/- 0.24 min  [1]
 Object Designation        : (102) Miriam
 Star Designation          : GDR3 2586738238354438016
 Star Coordinates (ICRF)   : RA = 01 23 54.3567, DE = +12 52 39.867  [2]
 Star Magnitudes           : G = 12.92 mag, RP = 12.38 mag, BP = 13.3 mag
 Object Magnitude          : V = 11.98 mag
 Estimated Magnitude Drop  : 0.4 mag
 Estimated Max. Duration   : 30.8 sec
 Object Mean Diameter      : 83 km  (src: astorb+H10)
 Speed of the shadow       : 2.7 km/s
 Elongation to Moon & Sun  : 74° (sunlit = 34%), Sun = 145°
 Cross-track uncertainty   : 8.7 mas = 6 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 3.63 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#102 (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

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Aladin Sky Atlas

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Collaborative Occultation Resources and Archive (CORA)

2020-09-11 / 4UC 515-002167 / (102) Miriam