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Observation Summary for X Per

X Per: X-ray Binary Star
Total Number of Spectra:174
First Spectrum:JD 2458383.501500\22 Sep 2018 00:02:09.600000 UT
Latest Spectrum:JD 2461061.691944\21 Jan 2026 04:36:23.961600 UT

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Summary by Observer

Observer IdObserver NameNumber of SpectraFirst Spectrum JD / UTLatest Spectrum JD / UT
ASGA Stiewing82458885.796600
6 Feb 2020 07:07:06.240000
2459267.690200
22 Feb 2021 04:33:53.280000
RLER Leadbeater692458383.501500
22 Sep 2018 00:02:09.600000
2461054.273380
13 Jan 2026 18:33:40.032000
OGDO Garde22458391.452900
29 Sep 2018 22:52:10.560000
2458396.463200
4 Oct 2018 23:07:00.480000
KGYK Gurney102458392.577600
1 Oct 2018 01:51:44.640000
2458871.386900
22 Jan 2020 21:17:08.160000
PBIP Berardi22458411.438600
19 Oct 2018 22:31:35.040000
2458432.396200
9 Nov 2018 21:30:31.680000
PSOP Somogyi52458416.481300
24 Oct 2018 23:33:04.320000
2458860.498500
11 Jan 2020 23:57:50.400000
HALH Allen102458411.435069
19 Oct 2018 22:26:29.961600
2461043.250064
2 Jan 2026 18:00:05.529600
JGFJ Guarro Fló242458413.474100
21 Oct 2018 23:22:42.240000
2459619.432600
8 Feb 2022 22:22:56.640000
SBLS Charbonnel62458396.577800
5 Oct 2018 01:52:01.920000
2458410.567000
19 Oct 2018 01:36:28.800000
TLRT Lester12458731.841600
5 Sep 2019 08:11:54.240000
2458731.841600
5 Sep 2019 08:11:54.240000
BRIER Brown12460693.745243
18 Jan 2025 05:53:08.995200
2460693.745243
18 Jan 2025 05:53:08.995200
FJQJ Foster172460940.979155
22 Sep 2025 11:29:58.992000
2461028.829624
19 Dec 2025 07:54:39.513600
DDBD Boyd62461003.332060
23 Nov 2025 19:58:09.984000
2461046.332216
5 Jan 2026 19:58:23.462400
CDZD Cejudo52461003.683183
24 Nov 2025 04:23:47.011200
2461017.639236
8 Dec 2025 03:20:29.990400
FASF Sims72461005.722662
26 Nov 2025 05:20:37.996800
2461061.691944
21 Jan 2026 04:36:23.961600
TROT Rodda12458398.471000
6 Oct 2018 23:18:14.400000
2458398.471000
6 Oct 2018 23:18:14.400000