Table 1.
Journal of GRAVITY observations.
| Object identifier |
MJD | α (J2000) | δ (J2000) | KS | Spectral | Calibrator | Seeing | |
|---|---|---|---|---|---|---|---|---|
| Bumgardner (1992) | CEN (OI) | (h m s) | (°′″) | mag | Type | (″) | ||
| NGC 6618-B189SW | CEN 1a | 58295.295 | 18 20 29.86 | −16 10 44 | 6.9 (a) | O4V (b) | HD167334 | 0.57 |
| NGC 6618-B189NE | CEN 1b | 58683.226 | 18 20 29.89 | −16 10 46 | 6.9 (a) | O4V (b) | HD167334 | 0.56 |
| NGC 6618-B111 | CEN 2 | 58239.288 | 18 20 34.49 | −16 10 11.84 | 7.5 | O4.5V (c) | HD 164357 | 0.81 |
| NGC 6618-B98 | CEN 3 | 58239.407 | 18 20 35.39 | −16 10 48.58 | 7.7 | O9V (b) | HD 164357 | 1.22 |
| NGC 6618-B0 | OI 345 | 58237.405 | 18 20 28.53 | −16 13 31 | 7.4 | O6V (b) | HD166565 | 0.82 |
| NGC 6618-B260 | CEN 18 | 58239.336 | 18 20 25.87 | −16 08 32.40 | 7.8 | O6V (b) | HD 164357 | 0.93 |
| TYC 6265-1977-1 | − | 58573.334 | 18 20 53.85 | −16 03 06.42 | 8.3 | G... (d) | TYC5689-515-1 | 0.71 |
| NGC 6618-B293 | CEN 7 | 58712.135 | 18 20 24.01 | −16 08 18.63 | 9.3 | F8 (d) | TYC6846-835-1 | 0.72 |
Notes. The first column lists the object’s number following the Bumgardner (1992) nomenclature. The second column lists alternative IDs, the CEN identifiers (Chini et al. 1980). The third column provides the observation date. The fourth and fifth columns give the right ascension (α) and declination (δ) (J2000). This is followed by the 2MASS K magnitude Hoffmeister et al. (2008) and spectral types. The second-to-last column indicates the calibrator star used, and the last column provides the seeing of the single-epoch observations.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.