Collaborative Occultation Resources and Archive (CORA)

2024-09-20 / UCAC4 419-130151 / (1030) Vitja

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Andreas Schweizer	O+	VID	M250	CH	GPS	19:40:29	19:41:28.700	19:41:33.320	19:42:30	0.400	0.170	4.62	39.3
2	show	Karl-Ludwig Bath	O+	CCD	T180	DE	NTP	19:38:59	19:41:18.80	19:41:25.15	19:43:59	1.42	1.42	6.35	54.0

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#69 : d0c0d6b0-c355-11ef-5276-db13f5fe3105 [db: observed]

JPL#67 : db983650-86ab-11ef-78cd-c3a6dd1f4d10 [db: asteroids]

Using prediction d0c0d6b0-c355-11ef-5276-db13f5fe3105 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 = -2676.4, 26.7 km
Circular diameter = 55 km

From 2 chords (CCD,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: 2024-09-20, 19:41 UT (JD = 2460574.320)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 3353	1.0	6.336	77°, -59°	2.448895e6	11679.3	0.0°	None	2019-09-26	not scaled	2019-05-07
# 3354	1.0	6.336	264°, -40°	2.448895e6	11679.3	0.0°	None	2019-09-26	not scaled	2019-05-07

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] : d0c0d6b0-c355-11ef-5276-db13f5fe3105 [observed] Occultation Date + Time : 2024-09-20 at 19:49:36 UT +/- 0.01 min [1] Object Designation : (1030) Vitja Orbit Class : MBA Star Designation : GDR3 4208916599735684608 Star Coordinates (ICRF) : RA = 19 37 49.8145, DE = -06 15 58.415 [2] Star Magnitudes : G = 14.58 mag, RP = 13.98 mag, BP = 15.02 mag Object Magnitude : V = 16.06 mag Estimated Magnitude Drop : 1.7 mag Estimated Max. Duration : 7.5 sec Object Mean Diameter : 64.1 km (src: astorb) Speed of the shadow : 8.5 km/s Elongation to Moon & Sun : 100° (sunlit = 89%), Sun = 116° Cross-track uncertainty : 0.4 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.95 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#69 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : d0c0d6b0-c355-11ef-5276-db13f5fe3105 [observed]

 Occultation Date + Time   : 2024-09-20 at 19:49:36 UT +/- 0.01 min  [1]
 Object Designation        : (1030) Vitja
 Orbit Class               : MBA
 Star Designation          : GDR3 4208916599735684608
 Star Coordinates (ICRF)   : RA = 19 37 49.8145, DE = -06 15 58.415  [2]
 Star Magnitudes           : G = 14.58 mag, RP = 13.98 mag, BP = 15.02 mag
 Object Magnitude          : V = 16.06 mag
 Estimated Magnitude Drop  : 1.7 mag
 Estimated Max. Duration   : 7.5 sec
 Object Mean Diameter      : 64.1 km  (src: astorb)
 Speed of the shadow       : 8.5 km/s
 Elongation to Moon & Sun  : 100° (sunlit = 89%), Sun = 116°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#69

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

More Data and Informations

SiMDA \| 3D Asteroid Catalogue \| Johnston Archive \| Star at CDS (Vizier) \| JPL Small-Body Node \| Minor Planet Center \| Wikipedia

(If error 404: link not valid which means no data available)

Aladin Sky Atlas

Aladin Lite direct link (has Gaia overlay)