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2024-08-20 / UCAC4 489-117727 / (950) Ahrensa

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Peter Tickner O+ VID M356 GB GPS 23:13:05 23:15:07.30 23:15:08.46 23:17:09 0.3 0.13 1.16 15.5
2 show Simon Kidd O- VID M350 GB GPS 23:14:00 23:16:00
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#72 : 1cf73680-c353-11ef-5276-62e57ba25b9e [db: observed]
JPL#70 : 96997760-868f-11ef-78cd-a2cccff1f1b5 [db: asteroids]

Using prediction 1cf73680-c353-11ef-5276-62e57ba25b9e for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2024-08-20, 23:15 UT (JD = 2460543.469)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 33721.0205.690 10°, 89° 2.449986e610557.50.0° None2019-09-26 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

Occ by (950) Ahrensa on 2024-08-20

Unavailable
100 km

Event Details
 Occultation UUID [and DB] : 1cf73680-c353-11ef-5276-62e57ba25b9e [observed]

 Occultation Date + Time   : 2024-08-20 at 23:20:38 UT +/- 0.0 min  [1]
 Object Designation        : (950) Ahrensa
 Orbit Class               : MBA
 Star Designation          : GDR3 4298165917077059328
 Star Coordinates (ICRF)   : RA = 19 53 49.3985, DE = +07 41 43.899  [2]
 Star Magnitudes           : G = 14.95 mag, RP = 14.08 mag, BP = 15.75 mag
 Object Magnitude          : V = 15.45 mag
 Estimated Magnitude Drop  : 1.0 mag
 Estimated Max. Duration   : 1.1 sec
 Object Mean Diameter      : 15.0 km  (src: astorb)
 Speed of the shadow       : 13.4 km/s
 Elongation to Moon & Sun  : 51° (sunlit = 98%), Sun = 142°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.96 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#72

 
 [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
19 53 49.399 +07 41 43.90
FoV: 29.96'
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