Cora»Occultation

2025-08-25 / UCAC4 561-007431 / (2983) Poltava

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Roland BONINSEGNA	O+	VID	M400	BE	GPS	02:14:05	02:14:27.94	02:14:28.58	02:15:43	0.080	0.080	0.64	9.0
2	show	Olivier Schreurs	O+	VID	M254	BE	GPS	02:13:36	02:14:33.48	02:14:35.56	02:15:35	0.160	0.160	2.08	29.1

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

2 observations found in db: sodis

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

JPL#71 : 549e0080-ddb7-11f0-547e-fc037eeada56 [db: observed]

Using prediction 549e0080-ddb7-11f0-547e-fc037eeada56 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:
X0,Y0 = 827.6, 34.5 km
Circular diameter = 29 km

From 2 chords (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).

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Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2025-08-25, 02:14 UT (JD = 2460912.593)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 5060	1.0	8.192	6°, -70°	2.457248e6	3664.6	0.0°	None	2020-10-05	not scaled	2019-10-23
# 5061	1.0	8.192	223°, -72°	2.457248e6	3664.6	0.0°	None	2020-10-05	not scaled	2019-10-23

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] : 549e0080-ddb7-11f0-547e-fc037eeada56 [observed] Occultation Date + Time : 2025-08-25 at 02:16:51 UT +/- 0.0 min [1] Object Designation : (2983) Poltava Orbit Class : MBA Star Designation : GDR3 0064505637078740736 Star Coordinates (ICRF) : RA = 03 39 04.5679, DE = +22 02 19.067 [2] Star Magnitudes : G = 13.43 mag, RP = 12.78 mag, BP = 13.94 mag Object Magnitude : V = 16.86 mag Estimated Magnitude Drop : 3.5 mag Estimated Max. Duration : 2.2 sec Object Mean Diameter : 30.9 km (src: astorb) Speed of the shadow : 14.0 km/s Elongation to Moon & Sun : 116° (sunlit = 4%), Sun = 95° Cross-track uncertainty : 0.3 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.03 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#71 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 549e0080-ddb7-11f0-547e-fc037eeada56 [observed]

 Occultation Date + Time   : 2025-08-25 at 02:16:51 UT +/- 0.0 min  [1]
 Object Designation        : (2983) Poltava
 Orbit Class               : MBA
 Star Designation          : GDR3 0064505637078740736
 Star Coordinates (ICRF)   : RA = 03 39 04.5679, DE = +22 02 19.067  [2]
 Star Magnitudes           : G = 13.43 mag, RP = 12.78 mag, BP = 13.94 mag
 Object Magnitude          : V = 16.86 mag
 Estimated Magnitude Drop  : 3.5 mag
 Estimated Max. Duration   : 2.2 sec
 Object Mean Diameter      : 30.9 km  (src: astorb)
 Speed of the shadow       : 14.0 km/s
 Elongation to Moon & Sun  : 116° (sunlit = 4%), Sun = 95°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#71
 Note                      : FP:true

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

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