3-day Schedule

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This page shows 3 days of the Chandra schedule, either side of today, and the total science exposure time for these observations is 5 days and 5 hours. The size of the circles indicate the exposure time, and the color shows whether the observation has been done, is running now, or is in the future; the same colors are used in the table below. For repeated observations it can be hard to make out what is going on, since the circles overlap! The shaded regions trace the Milky Way galaxy. The points are plotted in the Equatorial coordinate system, using the Aitoff projection.

TargetObject typeExposure timeStartInstrumentJoint withTurnaroundConstraintsRight AscensionDeclinationConstellation
Perseus cluster SUnidentified7 hours and 25 minutes4 days agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
2MASX J22373491-1925343Seyfert 2 Galaxy3 hours and 3 minutes3 days agoACIS-SHSTNonen/a22h 37m 34.9s-19° 25' 34.4"Aqr
Perseus cluster SUnidentified9 hours and 4 minutes3 days agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
2MASX J22373491-1925343Seyfert 2 Galaxy3 hours and 37 minutes3 days agoACIS-SHSTNonen/a22h 37m 34.9s-19° 25' 34.4"Aqr
TDE 2025aarmUnidentified4 hours and 8 minutes2 days agoACIS-Sn/aImmediateTime Critical04h 32m 12.4s-05° 22' 39.6"Eri
SDSSJ222203.73-092712.0Seyfert 1 Galaxy2 hours and 54 minutes2 days agoACIS-Sn/aNonen/a22h 22m 03.7s-09° 27' 12.1"Aqr
Perseus cluster SUnidentified8 hours and 39 minutes2 days agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
PSO J308.0416-21.2339Quasar4 hours and 26 minutes2 days agoACIS-Sn/aNonen/a20h 32m 10.0s-21° 14' 02.4"Cap
CAL-ER (41225)2 hours and 13 minutes1 day agon/an/an/an/a13h 02m 20.6s-17° 50' 35.2"n/a
CAL-ER (41224)50 minutes1 day agon/an/an/an/a21h 14m 28.4s-17° 52' 52.3"n/a
CAL-ER (41223)50 minutes1 day agon/an/an/an/a14h 30m 36.0s-20° 38' 38.4"n/a
CAL-ER (41222)15 minutes1 day agon/an/an/an/a21h 14m 28.4s-17° 52' 52.3"n/a
CAL-ER (41221)15 minutes1 day agon/an/an/an/a21h 53m 01.0s-10° 02' 53.2"n/a
Perseus cluster SUnidentified9 hours and 43 minutes24 hours agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 25' 24.8"Per
Mrk915Seyfert 2 Galaxy2 hours and 46 minutes14 hours agoACIS-Sn/aNonen/a22h 36m 46.5s-12° 32' 42.8"Aqr
EP J223759.5+531421Unidentified5 hours and 33 minutes11 hours agoACIS-Sn/aImmediateTime Critical, Monitoring22h 37m 59.5s+53° 14' 21.0"Lac
Perseus cluster NUnidentified3 hours and 36 minutes5 hours agoACIS-In/aNoneTime Critical03h 19m 48.2s+41° 35' 22.8"Per
NGC 424Seyfert 1 Galaxy8 hours and 20 minutesnowACIS-Sn/aNonen/a01h 11m 27.6s-38° 05' 00.4"Scl
SWIFT J2157.4-3316X-ray Source2 hours and 46 minutesin 7 hoursACIS-In/aNonen/a21h 57m 26.1s-33° 15' 50.4"PsA
TWA 7T Tau-type Star4 hours and 10 minutesin 11 hoursHRC-I with High Energy Transmission Grating (HETG)n/aNoneTime Critical10h 42m 29.9s-33° 40' 16.6"Ant
NGC 7213Seyfert 1 Galaxy3 hours and 20 minutesin 15 hoursACIS-S with High Energy Transmission Grating (HETG)n/aNonen/a22h 09m 16.2s-47° 10' 00.1"Gru
[vD2023]1Unidentified8 hours and 20 minutesin 19 hoursACIS-In/aNonen/a02h 41m 45.7s-08° 21' 02.0"Cet
CAL-ER (41220)50 minutesin 1 dayn/an/an/an/a22h 06m 36.0s-14° 41' 60.0"n/a
CAL-ER (41219)50 minutesin 1 dayn/an/an/an/a21h 32m 24.0s-12° 54' 00.0"n/a
CAL-ER (41218)50 minutesin 1 dayn/an/an/an/a13h 31m 60.0s+28° 00' 00.0"n/a
CAL-ER (41217)50 minutesin 2 daysn/an/an/an/a21h 32m 24.0s-12° 54' 00.0"n/a
MaNGA 8982-9101Emission-line galaxy3 hours and 20 minutesin 2 daysACIS-Sn/aNonen/a13h 26m 51.3s+26° 35' 28.5"Com
TIC466376085High Proper Motion Star2 hours and 20 minutesin 2 daysHRC-In/aNonen/a21h 47m 26.5s+06° 36' 17.5"Peg
TV CassiopeiaSpectroscopic Binary11 hours and 6 minutesin 2 daysACIS-S with High Energy Transmission Grating (HETG)n/aNonen/a00h 19m 18.8s+59° 08' 20.5"Cas
TIC466376085High Proper Motion Star2 hours and 50 minutesin 2 daysHRC-In/aNonen/a21h 47m 26.5s+06° 36' 17.5"Peg
SN 2023ixfSuperNova4 hours and 26 minutesin 3 daysACIS-Sn/aNoneTime Critical, Monitoring14h 03m 38.6s+54° 18' 41.9"UMa
SN 1986JSuperNova4 hours and 10 minutesin 3 daysACIS-Sn/aNoneTime Critical, Monitoring02h 22m 31.3s+42° 19' 56.4"And
TIC466376085High Proper Motion Star1 hour and 46 minutesin 3 daysHRC-In/aNonen/a21h 47m 26.5s+06° 36' 17.5"Peg
SN 2023ixfSuperNova3 hours and 53 minutesin 3 daysACIS-Sn/aNoneTime Critical, Monitoring14h 03m 38.6s+54° 18' 41.9"UMa