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2024-12-20 / TYC 2455-00778-1 / (18691) 1998 HE1

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show William Stewart O+ VID M279 GB GPS 20:02:29 20:03:27.670 20:03:28.150 20:04:29 0.04 0.04 0.48 7.0
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

1 observation found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#52 : 5bab2dc0-c35b-11ef-5276-b082ba75a55f [db: observed]

Using prediction 5bab2dc0-c35b-11ef-5276-b082ba75a55f for map and profile fit

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Map with groundtrack and observer stations

Occ by (18691) 1998 HE1 on 2024-12-20

Unavailable
100 km

Event Details
 Occultation UUID [and DB] : 5bab2dc0-c35b-11ef-5276-b082ba75a55f [observed]

 Occultation Date + Time   : 2024-12-20 at 19:58:11 UT +/- 0.0 min  [1]
 Object Designation        : (18691) 1998 HE1
 Orbit Class               : MBA
 Star Designation          : GDR3 0890205781110942720
 Star Coordinates (ICRF)   : RA = 07 16 46.6415, DE = +32 38 25.037  [2]
 Star Magnitudes           : G = 12.2 mag, RP = 12.23 mag, BP = 12.19 mag
 Object Magnitude          : V = 18.86 mag
 Estimated Magnitude Drop  : 6.7 mag
 Estimated Max. Duration   : 0.5 sec
 Object Mean Diameter      : 6.9 km  (src: astorb)
 Speed of the shadow       : 14.5 km/s
 Elongation to Moon & Sun  : 50° (sunlit = 70%), Sun = 160°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.11 path-width (1-sig)
 RUWE and duplicate source : 1.06 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#52

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

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Aladin Sky Atlas
07 16 46.642 +32 38 25.04
FoV: 29.96'
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