Collaborative Occultation Resources and Archive (CORA)

2024-09-28 / J082123.16+022658.5 / (667) Denise

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Serge Dramonis	O+	VID	M400	GR	GPS	02:19:45	02:20:29.88	02:20:32.51	02:21:45	0.06	0.06	2.63	85.7
2	show	Serge Dramonis	O+	VID	M400	GR	GPS	02:19:45	02:20:29.88	02:20:31.45	02:21:45	0.06	0.06	1.57	51.2

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 : b4b10ac0-c356-11ef-5276-586cfe9edc8b [db: observed]

JPL#69 : b4b10ac0-c356-11ef-5276-7e8dfef9110d [db: observed]

JPL#68 : 7f4b2100-8615-11ef-78cd-af5c67fd7d5a [db: asteroids]

JPL#68 : 7f4b2100-8615-11ef-78cd-138c7bdbaaa5 [db: asteroids]

Using prediction b4b10ac0-c356-11ef-5276-586cfe9edc8b 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:
Circular profile fit was not successful ...

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: 2024-09-28, 02:20 UT (JD = 2460581.597)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 5666	1.0	12.685	40°, -86°	2.45723e6	3351.6	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] : b4b10ac0-c356-11ef-5276-586cfe9edc8b [observed] Occultation Date + Time : 2024-09-28 at 02:22:50 UT +/- 0.0 min [1] Object Designation : (667) Denise Orbit Class : MBA Star Designation : GDR3 3090268040789518336 Star Coordinates (ICRF) : RA = 08 21 23.1506, DE = +02 26 58.519 [2] Star Magnitudes : G = 10.63 mag, RP = 10.12 mag, BP = 10.4 mag Object Magnitude : V = 14.82 mag Estimated Magnitude Drop : 4.2 mag Estimated Max. Duration : 2.5 sec Object Mean Diameter : 81.3 km (src: astorb) Speed of the shadow : 32.6 km/s Elongation to Moon & Sun : 22° (sunlit = 19%), Sun = 60° Cross-track uncertainty : 0.7 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.4 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] : b4b10ac0-c356-11ef-5276-586cfe9edc8b [observed]

 Occultation Date + Time   : 2024-09-28 at 02:22:50 UT +/- 0.0 min  [1]
 Object Designation        : (667) Denise
 Orbit Class               : MBA
 Star Designation          : GDR3 3090268040789518336
 Star Coordinates (ICRF)   : RA = 08 21 23.1506, DE = +02 26 58.519  [2]
 Star Magnitudes           : G = 10.63 mag, RP = 10.12 mag, BP = 10.4 mag
 Object Magnitude          : V = 14.82 mag
 Estimated Magnitude Drop  : 4.2 mag
 Estimated Max. Duration   : 2.5 sec
 Object Mean Diameter      : 81.3 km  (src: astorb)
 Speed of the shadow       : 32.6 km/s
 Elongation to Moon & Sun  : 22° (sunlit = 19%), Sun = 60°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.4 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

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Aladin Sky Atlas
08 21 23.151 +02 26 58.52 FoV: 29.96' +– × × Go to:
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