Collaborative Occultation Resources and Archive (CORA)

2023-07-27 / TYC 0380-00532-1 / (5957) Irina

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Carles Schnabel	O+	VID	M400	ES	GPS	00:28:12	00:30:03.209	00:30:04.199	00:31:43	0.01	0.01	0.99	12.2
2	show	Antoni Selva	O+	VID	M500	ES	GPS	00:28:03	00:30:02.970	00:30:03.570	00:32:02	0.02	0.02	0.60	7.4

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

2 observations found in db: sodis

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

JPL#59 : 726c0a10-c339-11ef-5276-ef93fea609a0 [db: observed]

Using prediction 726c0a10-c339-11ef-5276-ef93fea609a0 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:
X0,Y0 = -4924.1, 52.5 km
Circular diameter = 13 km

From 2 chords (VID)

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).

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 726c0a10-c339-11ef-5276-ef93fea609a0 [observed] Occultation Date + Time : 2023-07-27 at 00:34:33 UT +/- 0.02 min [1] Object Designation : (5957) Irina Orbit Class : MBA Star Designation : GDR3 4438177212347821824 Star Coordinates (ICRF) : RA = 16 18 41.9911, DE = +06 16 56.253 [2] Star Magnitudes : G = 8.19 mag, RP = 7.77 mag, BP = 8.45 mag Object Magnitude : V = 17.65 mag Estimated Magnitude Drop : 9.5 mag Estimated Max. Duration : 0.9 sec Object Mean Diameter : 10.6 km (src: astorb) Speed of the shadow : 12.3 km/s Elongation to Moon & Sun : 32° (sunlit = 61%), Sun = 114° Cross-track uncertainty : 0.4 mas = 0 km = 0.06 path-width (1-sig) RUWE and duplicate source : 1.89 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#59 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 726c0a10-c339-11ef-5276-ef93fea609a0 [observed]

 Occultation Date + Time   : 2023-07-27 at 00:34:33 UT +/- 0.02 min  [1]
 Object Designation        : (5957) Irina
 Orbit Class               : MBA
 Star Designation          : GDR3 4438177212347821824
 Star Coordinates (ICRF)   : RA = 16 18 41.9911, DE = +06 16 56.253  [2]
 Star Magnitudes           : G = 8.19 mag, RP = 7.77 mag, BP = 8.45 mag
 Object Magnitude          : V = 17.65 mag
 Estimated Magnitude Drop  : 9.5 mag
 Estimated Max. Duration   : 0.9 sec
 Object Mean Diameter      : 10.6 km  (src: astorb)
 Speed of the shadow       : 12.3 km/s
 Elongation to Moon & Sun  : 32° (sunlit = 61%), Sun = 114°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 1.89 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#59

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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