Cora»Occultation

2023-07-14 / UCAC4 343-143279 / (2127) Tanya

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Andreas Tazreiter	O+	CCD	L180	AT	GPS	21:53:54	21:57:50.810	21:57:53.360	22:03:02	0.08	0.08	2.55	31.1
2	show	Maciej Borkowski	O+	VID	M200	PL	GPS	21:55:18	21:57:18.066	21:57:21.426	21:59:16	0.113	0.113	3.36	41.0
3	show	Jiri Kubanek	O-	VID	M303	CZ	GPS	21:55:54			21:59:57
4	show	Marcin Filipek	O-	VID	M250	PL	GPS	21:56:51			21:57:50
5	show	Wojciech Burzynski	O-	VID	M250	PL	GPS	21:55:44			21:58:06

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

5 observations found in db: sodis

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

JPL#76 : d405f4d0-ddb3-11f0-547e-856d7df6f751 [db: observed]

Using prediction d405f4d0-ddb3-11f0-547e-856d7df6f751 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 = 2028.5, 6.6 km
Circular diameter = 47 km

From 2 chords (CCD,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.

Sky projection (artificial light) for occ. time: 2023-07-14, 21:56 UT (JD = 2460140.414)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 4813	1.0	7.851	87°, -46°	2.457401e6	2739.4	0.0°	None	2020-10-05	not scaled	2019-10-23
# 4814	1.0	7.851	248°, -19°	2.457401e6	2739.4	0.0°	None	2020-10-05	not scaled	2019-10-23

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] : d405f4d0-ddb3-11f0-547e-856d7df6f751 [observed] Occultation Date + Time : 2023-07-14 at 22:00:58 UT +/- 0.0 min [1] Object Designation : (2127) Tanya Orbit Class : MBA Star Designation : GDR3 4091011947864587520 Star Coordinates (ICRF) : RA = 18 23 14.5551, DE = -21 25 05.382 [2] Star Magnitudes : G = 11.68 mag, RP = 10.61 mag, BP = 12.9 mag Object Magnitude : V = 15.85 mag Estimated Magnitude Drop : 4.2 mag Estimated Max. Duration : 3.2 sec Object Mean Diameter : 39.3 km (src: astorb) Speed of the shadow : 12.2 km/s Elongation to Moon & Sun : 164° (sunlit = 8%), Sun = 163° Cross-track uncertainty : 0.4 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.28 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#76 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : d405f4d0-ddb3-11f0-547e-856d7df6f751 [observed]

 Occultation Date + Time   : 2023-07-14 at 22:00:58 UT +/- 0.0 min  [1]
 Object Designation        : (2127) Tanya
 Orbit Class               : MBA
 Star Designation          : GDR3 4091011947864587520
 Star Coordinates (ICRF)   : RA = 18 23 14.5551, DE = -21 25 05.382  [2]
 Star Magnitudes           : G = 11.68 mag, RP = 10.61 mag, BP = 12.9 mag
 Object Magnitude          : V = 15.85 mag
 Estimated Magnitude Drop  : 4.2 mag
 Estimated Max. Duration   : 3.2 sec
 Object Mean Diameter      : 39.3 km  (src: astorb)
 Speed of the shadow       : 12.2 km/s
 Elongation to Moon & Sun  : 164° (sunlit = 8%), Sun = 163°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.28 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#76
 Note                      : FP:true

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

More Data and Informations

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