Cora»Occultation

2025-04-22 / UCAC4 401-061053 / (31736) 1999 JR73

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Deborah Smith	O+	CCD	M200	ES	NTP	01:17:48	01:19:46.712	01:19:47.082	01:21:48	0.014	0.014	0.37	4.3
2	show	Deborah Smith	O+	CCD	M200	ES	NTP	01:17:48	01:19:47.89	01:19:48.02	01:21:48	0.02	0.02	0.13	1.5
3	show	Deborah Smith	O+	CCD	M280	ES	NTP	01:17:53	01:19:51.04	01:19:51.27	01:21:53	0.05	0.05	0.23	2.7

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: sodis

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

JPL#51 : 7dcbcce0-ddb6-11f0-547e-81d5bbdf9015 [db: observed]

Using prediction 7dcbcce0-ddb6-11f0-547e-81d5bbdf9015 for map and profile fit

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Event Details
Occultation UUID [and DB] : 7dcbcce0-ddb6-11f0-547e-81d5bbdf9015 [observed] Occultation Date + Time : 2025-04-22 at 01:15:23 UT +/- 0.01 min [1] Object Designation : (31736) 1999 JR73 Orbit Class : MBA Star Designation : GDR3 6316990418098769408 Star Coordinates (ICRF) : RA = 15 37 58.9612, DE = -09 53 57.511 [2] Star Magnitudes : G = 12.4 mag, RP = 11.67 mag, BP = 12.98 mag Object Magnitude : V = 19.02 mag Estimated Magnitude Drop : 6.6 mag Estimated Max. Duration : 0.4 sec Object Mean Diameter : 4.8 km (src: astorb) Speed of the shadow : 11.6 km/s Elongation to Moon & Sun : 80° (sunlit = 40%), Sun = 156° Cross-track uncertainty : 1.0 mas = 1 km = 0.33 path-width (1-sig) RUWE and duplicate source : 1.24 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#51 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 7dcbcce0-ddb6-11f0-547e-81d5bbdf9015 [observed]

 Occultation Date + Time   : 2025-04-22 at 01:15:23 UT +/- 0.01 min  [1]
 Object Designation        : (31736) 1999 JR73
 Orbit Class               : MBA
 Star Designation          : GDR3 6316990418098769408
 Star Coordinates (ICRF)   : RA = 15 37 58.9612, DE = -09 53 57.511  [2]
 Star Magnitudes           : G = 12.4 mag, RP = 11.67 mag, BP = 12.98 mag
 Object Magnitude          : V = 19.02 mag
 Estimated Magnitude Drop  : 6.6 mag
 Estimated Max. Duration   : 0.4 sec
 Object Mean Diameter      : 4.8 km  (src: astorb)
 Speed of the shadow       : 11.6 km/s
 Elongation to Moon & Sun  : 80° (sunlit = 40%), Sun = 156°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.33 path-width (1-sig)
 RUWE and duplicate source : 1.24 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#51
 Note                      : FP:true

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

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