Cora»Occultation

2025-08-13 / UCAC4 520-002215 / (138940) 2001 BO23

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Vitali Nevski	O-	VID	M300	BY	GPS	22:40:52	::	::	22:42:52

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#49 : 3d6fb4d0-ddb7-11f0-547e-a27947abed58 [db: observed]

JPL#49 : 3d6fdbe0-ddb7-11f0-547e-5c769b1f7c76 [db: observed]

Using prediction 3d6fdbe0-ddb7-11f0-547e-5c769b1f7c76 for map and profile fit

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 3d6fdbe0-ddb7-11f0-547e-5c769b1f7c76 [observed] Occultation Date + Time : 2025-08-13 at 22:34:12 UT +/- 0.06 min [1] Object Designation : (138940) 2001 BO23 Orbit Class : MBA Star Designation : GDR3 2590225167682675712 Star Coordinates (ICRF) : RA = 01 21 51.3697, DE = +13 48 07.836 [2] Star Magnitudes : G = 14.23 mag, RP = 13.39 mag, BP = 14.2 mag Object Magnitude : V = 19.95 mag Estimated Magnitude Drop : 5.7 mag Estimated Max. Duration : 0.6 sec Object Mean Diameter : 2.1 km (src: astorb) Speed of the shadow : 3.7 km/s Elongation to Moon & Sun : 3° (sunlit = 75%), Sun = 117° Cross-track uncertainty : 3.3 mas = 3 km = 1.79 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#49 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 3d6fdbe0-ddb7-11f0-547e-5c769b1f7c76 [observed] Occultation Date + Time : 2025-08-13 at 22:34:12 UT +/- 0.06 min [1] Object Designation : (138940) 2001 BO23 Orbit Class : MBA Star Designation : GDR3 2590225167682675712 Star Coordinates (ICRF) : RA = 01 21 51.3697, DE = +13 48 07.836 [2] Star Magnitudes : G = 14.23 mag, RP = 13.39 mag, BP = 14.2 mag Object Magnitude : V = 19.95 mag Estimated Magnitude Drop : 5.7 mag Estimated Max. Duration : 0.6 sec Object Mean Diameter : 2.1 km (src: astorb) Speed of the shadow : 3.7 km/s Elongation to Moon & Sun : 3° (sunlit = 75%), Sun = 117° Cross-track uncertainty : 3.3 mas = 3 km = 1.79 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#49 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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