Cora»Occultation

2023-04-15 / UCAC4 578-044908 / (757) Portlandia

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jiri Kubanek	O+	VID	M303	CZ	GPS	19:33:09	19:35:09.56	19:35:11.26	19:37:12	0.10	0.10	1.70	21.1

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#112 : 8ca16fc0-ddb3-11f0-547e-b807cf540275 [db: observed]

Using prediction 8ca16fc0-ddb3-11f0-547e-b807cf540275 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2023-04-15, 19:34 UT (JD = 2460050.315)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 962	None	6.581	263°, -69°	2.450356e6	9694.3	0.0°	None	None	not scaled	2016-01-04
# 963	None	6.581	90°, -56°	2.450356e6	9694.3	0.0°	None	None	not scaled	2016-01-04

Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0

Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 8ca16fc0-ddb3-11f0-547e-b807cf540275 [observed] Occultation Date + Time : 2023-04-15 at 19:36:01 UT +/- 0.0 min [1] Object Designation : (757) Portlandia Orbit Class : MBA Star Designation : GDR3 0690900572519573376 Star Coordinates (ICRF) : RA = 08 51 16.8294, DE = +25 35 34.009 [2] Star Magnitudes : G = 13.12 mag, RP = 12.48 mag, BP = 13.6 mag Object Magnitude : V = 14.42 mag Estimated Magnitude Drop : 1.6 mag Estimated Max. Duration : 2.6 sec Object Mean Diameter : 32.1 km (src: astorb) Speed of the shadow : 12.4 km/s Elongation to Moon & Sun : 160° (sunlit = 23%), Sun = 103° Cross-track uncertainty : 0.7 mas = 0 km = 0.03 path-width (1-sig) RUWE and duplicate source : 0.98 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#112 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 8ca16fc0-ddb3-11f0-547e-b807cf540275 [observed] Occultation Date + Time : 2023-04-15 at 19:36:01 UT +/- 0.0 min [1] Object Designation : (757) Portlandia Orbit Class : MBA Star Designation : GDR3 0690900572519573376 Star Coordinates (ICRF) : RA = 08 51 16.8294, DE = +25 35 34.009 [2] Star Magnitudes : G = 13.12 mag, RP = 12.48 mag, BP = 13.6 mag Object Magnitude : V = 14.42 mag Estimated Magnitude Drop : 1.6 mag Estimated Max. Duration : 2.6 sec Object Mean Diameter : 32.1 km (src: astorb) Speed of the shadow : 12.4 km/s Elongation to Moon & Sun : 160° (sunlit = 23%), Sun = 103° Cross-track uncertainty : 0.7 mas = 0 km = 0.03 path-width (1-sig) RUWE and duplicate source : 0.98 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#112 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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