Cora»Occultation

2021-11-09 / 4UC 513-003104 / (295645) 2008 SP279

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Peter Delincak	O+	CCD	M400	SK	GPS++	19:11:00	19:12:07.36	19:12:07.91	19:13:00	0.03	0.03	0.55	8.6
2	show	Peter Delincak	O+	CCD	M400	SK	GPS++	19:11:00	19:12:07.96	19:12:08.07	19:13:00	0.03	0.03	0.11	1.7
3	show	Stefano Sposetti	O-	CCD	M420	CH		19:09:30			19:15:30
4	show	Peter Nosal	O-	CCD	M250	SK		19:10:59			19:13:03

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

4 observations found in db: euraster

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

JPL#20 : cd19a714-b87a-48af-affb-c6b29ea47b2e [db: observed]

Using prediction cd19a714-b87a-48af-affb-c6b29ea47b2e 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:
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] : cd19a714-b87a-48af-affb-c6b29ea47b2e [observed] Occultation Date + Time : 2021-11-09 at 19:11:12 UT +/- 0.08 min [1] Object Designation : (295645) 2008 SP279 Orbit Class : JTRO Star Designation : GDR3 2574818428502148608 Star Coordinates (ICRF) : RA = 01 57 28.8633, DE = +12 27 03.922 [2] Star Magnitudes : G = 12.41 mag, RP = 11.96 mag, BP = 12.7 mag Object Magnitude : V = 20.93 mag Estimated Magnitude Drop : 8.5 mag Estimated Max. Duration : 0.4 sec Object Mean Diameter : 6 km (src: astorb) Speed of the shadow : 15.6 km/s Elongation to Moon & Sun : 96° (sunlit = 31%), Sun = 164° Cross-track uncertainty : 22.0 mas = 66 km = 11.95 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#20 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : cd19a714-b87a-48af-affb-c6b29ea47b2e [observed]

 Occultation Date + Time   : 2021-11-09 at 19:11:12 UT +/- 0.08 min  [1]
 Object Designation        : (295645) 2008 SP279
 Orbit Class               : JTRO
 Star Designation          : GDR3 2574818428502148608
 Star Coordinates (ICRF)   : RA = 01 57 28.8633, DE = +12 27 03.922  [2]
 Star Magnitudes           : G = 12.41 mag, RP = 11.96 mag, BP = 12.7 mag
 Object Magnitude          : V = 20.93 mag
 Estimated Magnitude Drop  : 8.5 mag
 Estimated Max. Duration   : 0.4 sec
 Object Mean Diameter      : 6 km  (src: astorb)
 Speed of the shadow       : 15.6 km/s
 Elongation to Moon & Sun  : 96° (sunlit = 31%), Sun = 164°
 Cross-track uncertainty   : 22.0 mas = 66 km = 11.95 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#20

 
 [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

Aladin Lite direct link (has Gaia overlay)

Collaborative Occultation Resources and Archive (CORA)

2021-11-09 / 4UC 513-003104 / (295645) 2008 SP279