Cora»Occultation

2022-12-26 / 4UC 534-034460 / (701) Oriola

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jean Bourgeois	O+	VID	M356	BE	GPS++	21:57:00	21:58:01.06	21:58:05.1	21:59:00	0.08	0.2	4.04	53.7
2	show	Jan-Maarten Winkel	O+	VID	M356	NL	GPS++	21:56:46	21:57:47.7	21:57:50.0	21:58:46	0.3	0.5	2.30	30.6
3	show	Henk De Groot	O?	VID	M356	NL	GPS++	21:55:57	21:57:51.4	21:57:52.7	22:00:38	0.4	0.4	1.30	17.3

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

3 observations found in db: euraster

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

JPL#74 (23-01-08) : 0c7b2a5b-d391-4ccf-8b4d-654a114fca5f [db: observed]

Using prediction 0c7b2a5b-d391-4ccf-8b4d-654a114fca5f 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 = 354 x 21 km
a',b' = 177.1, 10.5 km
X0,Y0 = 209.3, 23.0 km
Mean diameter = 86 km

From 3 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).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 0c7b2a5b-d391-4ccf-8b4d-654a114fca5f [observed] Occultation Date + Time : 2022-12-26 at 21:55:28 UT +/- 0.05 min [1] Object Designation : (701) Oriola Star Designation : GDR3 3358113467068959872 Star Coordinates (ICRF) : RA = 06 51 45.0756, DE = +16 37 38.219 [2] Star Magnitudes : G = 13.97 mag, RP = 13.6 mag, BP = 14.19 mag Object Magnitude : V = 13.53 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 3.0 sec Object Mean Diameter : 40 km (src: astorb+H10) Speed of the shadow : 13.3 km/s Elongation to Moon & Sun : 137° (sunlit = 17%), Sun = 170° Cross-track uncertainty : 7.3 mas = 10 km = 0.27 path-width (1-sig) RUWE and duplicate source : 1.08 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#74 (23-01-08) [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 0c7b2a5b-d391-4ccf-8b4d-654a114fca5f [observed]

 Occultation Date + Time   : 2022-12-26 at 21:55:28 UT +/- 0.05 min  [1]
 Object Designation        : (701) Oriola
 Star Designation          : GDR3 3358113467068959872
 Star Coordinates (ICRF)   : RA = 06 51 45.0756, DE = +16 37 38.219  [2]
 Star Magnitudes           : G = 13.97 mag, RP = 13.6 mag, BP = 14.19 mag
 Object Magnitude          : V = 13.53 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 3.0 sec
 Object Mean Diameter      : 40 km  (src: astorb+H10)
 Speed of the shadow       : 13.3 km/s
 Elongation to Moon & Sun  : 137° (sunlit = 17%), Sun = 170°
 Cross-track uncertainty   : 7.3 mas = 10 km = 0.27 path-width (1-sig)
 RUWE and duplicate source : 1.08 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#74 (23-01-08)

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

More Data and Informations

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Aladin Sky Atlas

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Collaborative Occultation Resources and Archive (CORA)

2022-12-26 / 4UC 534-034460 / (701) Oriola