The target - SDSS J142129.75+474724.5 - is being observed by ACIS-S for 11 hours and 29 minutes. The observation started 5 hours ago and ends in 6 hours, and is part of the proposal Analyzing the X-ray Emission of Nearby Triple Galaxy Systems. The target - also called LEDA 140305 - is located in the constellation Boötes and is a Seyfert 1 Galaxy. The source is so bright in X-rays that only one-eigth of the chip is used for the observation. More information on the target can be found at SIMBAD
. See related observations: SDSS J105432.03+122851.9 (29920, 32213, 32214, 32215); SDSS J110800.98+072632.2 (29917); SDSS J131249.15+225151.5 (29922, 32385); SDSS J141358.51+305722.3 (29924); SDSS J142819.32+152514.7 (29921); SDSS J143154.09+215618.3 (29919); SDSS J160158.51+470547.9 (29923); SDSS J221220.34+003336.4 (29918).
| Target: | SDSS J142129.75+474724.5 |
| SIMBAD Type: | Seyfert 1 Galaxy |
| Observation Details: | 29925 |
| Sequence Summary: | 705213 |
| Proposal Id: | 26700089 |
| Proposal: | Cycle 26, General Observer, ACTIVE GALAXIES AND QUASARS |
| Instrument: | ACIS-S |
| Chips: | ACIS-67 |
| Sub Array: | Start: 449 Rows: 128 |
| Data Mode: | FAINT |
| Date: | 11:43 Tuesday, 16 June 2026 (UTC) |
| Exposure (approved): | 11 hours and 29 minutes |
| Right Ascension: | 14h 21m 29.7s |
| Declination: | +47° 47' 24.5" |
| Roll: | 224° |
| Constellation: | Boötes |
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