Cora»Occultation

2025-09-04 / UCAC4 435-000769 / (1871) Astyanax

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Didier Walliang, Isabelle Auvray	O-	CCD	M2500	FR	GPS	00:33:09	::	::	00:37:02

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

1 observation found in db: sodis

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

JPL#62 : 60a25390-ddb7-11f0-547e-d4e3ffd941e2 [db: observed]

Using prediction 60a25390-ddb7-11f0-547e-d4e3ffd941e2 for map and profile fit

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Event Details
Occultation UUID [and DB] : 60a25390-ddb7-11f0-547e-d4e3ffd941e2 [observed] Occultation Date + Time : 2025-09-04 at 00:37:37 UT +/- 0.04 min [1] Object Designation : (1871) Astyanax Orbit Class : JTRO Star Designation : GDR3 2528684161847747456 Star Coordinates (ICRF) : RA = 00 34 34.2426, DE = -03 03 12.601 [2] Star Magnitudes : G = 13.0 mag, RP = 12.47 mag, BP = 13.37 mag Object Magnitude : V = 18.3 mag Estimated Magnitude Drop : 5.3 mag Estimated Max. Duration : 1.4 sec Object Mean Diameter : 19.4 km (src: astorb) Speed of the shadow : 14.0 km/s Elongation to Moon & Sun : 72° (sunlit = 84%), Sun = 154° Cross-track uncertainty : 2.7 mas = 8 km = 0.42 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#62 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 60a25390-ddb7-11f0-547e-d4e3ffd941e2 [observed] Occultation Date + Time : 2025-09-04 at 00:37:37 UT +/- 0.04 min [1] Object Designation : (1871) Astyanax Orbit Class : JTRO Star Designation : GDR3 2528684161847747456 Star Coordinates (ICRF) : RA = 00 34 34.2426, DE = -03 03 12.601 [2] Star Magnitudes : G = 13.0 mag, RP = 12.47 mag, BP = 13.37 mag Object Magnitude : V = 18.3 mag Estimated Magnitude Drop : 5.3 mag Estimated Max. Duration : 1.4 sec Object Mean Diameter : 19.4 km (src: astorb) Speed of the shadow : 14.0 km/s Elongation to Moon & Sun : 72° (sunlit = 84%), Sun = 154° Cross-track uncertainty : 2.7 mas = 8 km = 0.42 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#62 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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