Cora»Occultation

2026-08-02 / UCAC4 605-008815 / (762) Pulcova

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Michael OConnell	O+	VID	M350	ES	NTP	00:37:12	00:38:08.87	00:38:14.77	00:39:11	0.150	0.150	5.90	138.7
2	show	Michel Boutet	O+	VID	M300	FR	GPS	00:37:00	00:38:33.28	00:38:39.03	00:39:59	0.150	0.100	5.75	135.1
3	show	Nigel Wakefield	O+	VID	M250	GB	GPS	00:38:16	00:38:44.09	00:38:49.85	00:39:20	0.160	0.160	5.76	135.4
4	show	Peter Birtwhistle	O+	DRS	M405	GB	NTP	00:38:43	00:38:44.27	00:38:49.73	00:38:53	0.250	0.250	5.46	128.3
5	show	Derrick Ward	O+	VID	M200	GB	NTP	00:36:47	00:38:44.4	00:38:50.6	00:40:46	0.400	0.500	6.20	145.7
6	show	Alex Pratt	O+	VID	M280	GB	GPS	00:38:02	00:38:54.73	00:39:00.67	00:39:32	0.130	0.190	5.94	139.6
7	show	Deborah Smith	O-	VID	M250	ES	GPS	00:36:47	::	::	00:38:48
8	show	Simon Kidd	O-	VID	M350	GB	GPS	00:38:22	::	::	00:39:15

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

8 observations found in db: sodis

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

JPL148 : 372a6190-d9ad-11f1-43f3-6a217dff7150 [db: observed]

JPL148 : 3bbee860-d9ae-11f1-43f3-3b8d18afbf58 [db: observed]

Using prediction 372a6190-d9ad-11f1-43f3-6a217dff7150 for map and profile fit

Get observations as KML file (reduced site location resolution)

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result:
Size = 150 x 77 km
a',b' = 75.2, 38.7 km
X0,Y0 = 2691.9, 22.6 km
Mean diameter = 108 km

From 6 chords (DRS,VID)

You can enter space separated chord numbers (example: 11 4 8) or a method like VIS to ignore all visual timings, or a time source like RAD and NTP (but not GPS).
If the plot disappears, then there are less than 2 chords left (too much ignored, go back with browser).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2026-08-02, 00:38 UT (JD = 2461254.526)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 954	None	5.840	17°, -14°	2.450721e6	10533.5	0.0°	None	None	not scaled	2016-01-04
# 955	None	5.840	194°, -43°	2.450721e6	10533.5	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] : 372a6190-d9ad-11f1-43f3-6a217dff7150 [observed] Occultation Date + Time : 2026-08-02 at 00:39:49 UT +/- 0.01 min [1] Object Designation : (762) Pulcova Orbit Class : MBA Star Designation : GDR3 0123209589381870720 Star Coordinates (ICRF) : RA = 03 07 21.0844, DE = +30 51 08.652 [2] Star Magnitudes : G = 13.2 mag, RP = 12.63 mag, BP = 13.59 mag Object Magnitude : V = 14.43 mag Estimated Magnitude Drop : 1.5 mag Estimated Max. Duration : 5.8 sec Object Mean Diameter : 137.1 km (src: astorb) Speed of the shadow : 23.5 km/s Elongation to Moon & Sun : 64° (sunlit = 89%), Sun = 77° Cross-track uncertainty : 1.0 mas = 2 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL148 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 372a6190-d9ad-11f1-43f3-6a217dff7150 [observed]

 Occultation Date + Time   : 2026-08-02 at 00:39:49 UT +/- 0.01 min  [1]
 Object Designation        : (762) Pulcova
 Orbit Class               : MBA
 Star Designation          : GDR3 0123209589381870720
 Star Coordinates (ICRF)   : RA = 03 07 21.0844, DE = +30 51 08.652  [2]
 Star Magnitudes           : G = 13.2 mag, RP = 12.63 mag, BP = 13.59 mag
 Object Magnitude          : V = 14.43 mag
 Estimated Magnitude Drop  : 1.5 mag
 Estimated Max. Duration   : 5.8 sec
 Object Mean Diameter      : 137.1 km  (src: astorb)
 Speed of the shadow       : 23.5 km/s
 Elongation to Moon & Sun  : 64° (sunlit = 89%), Sun = 77°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL148
 Note                      : FP:true

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

More Data and Informations

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