Cora»Occultation

2024-09-20 / UCAC4 565-005982 / (74146) 1998 QS84

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jiri Polak	O-	VID	M300	CZ	GPS	00:43:54			00:47:54
2	show	Tomas Janik	O-	CCD	T600	CZ	GPS	00:44:51			00:45:49

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#41 : 6b5866a0-ddb5-11f0-547e-44b269772c7c [db: observed]

Using prediction 6b5866a0-ddb5-11f0-547e-44b269772c7c for map and profile fit

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Event Details
Occultation UUID [and DB] : 6b5866a0-ddb5-11f0-547e-44b269772c7c [observed] Occultation Date + Time : 2024-09-20 at 00:56:56 UT +/- 0.06 min [1] Object Designation : (74146) 1998 QS84 Orbit Class : MBA Star Designation : GDR3 0109871864797125120 Star Coordinates (ICRF) : RA = 02 57 54.9232, DE = +22 48 00.900 [2] Star Magnitudes : G = 13.77 mag, RP = 12.71 mag, BP = 14.91 mag Object Magnitude : V = 18.9 mag Estimated Magnitude Drop : 5.1 mag Estimated Max. Duration : 1.1 sec Object Mean Diameter : 3.2 km (src: astorb) Speed of the shadow : 2.9 km/s Elongation to Moon & Sun : 24° (sunlit = 94%), Sun = 129° Cross-track uncertainty : 0.4 mas = 0 km = 0.14 path-width (1-sig) RUWE and duplicate source : 1.14 mas, dup.src = 1 (0:false, 1:true) Ephemeris Reference : JPL#41 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 6b5866a0-ddb5-11f0-547e-44b269772c7c [observed] Occultation Date + Time : 2024-09-20 at 00:56:56 UT +/- 0.06 min [1] Object Designation : (74146) 1998 QS84 Orbit Class : MBA Star Designation : GDR3 0109871864797125120 Star Coordinates (ICRF) : RA = 02 57 54.9232, DE = +22 48 00.900 [2] Star Magnitudes : G = 13.77 mag, RP = 12.71 mag, BP = 14.91 mag Object Magnitude : V = 18.9 mag Estimated Magnitude Drop : 5.1 mag Estimated Max. Duration : 1.1 sec Object Mean Diameter : 3.2 km (src: astorb) Speed of the shadow : 2.9 km/s Elongation to Moon & Sun : 24° (sunlit = 94%), Sun = 129° Cross-track uncertainty : 0.4 mas = 0 km = 0.14 path-width (1-sig) RUWE and duplicate source : 1.14 mas, dup.src = 1 (0:false, 1:true) Ephemeris Reference : JPL#41 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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