Exposure
- ID
- GRAVI.2025-10-30T03:08:05.529_2
- Header ID
- GRAVI.2025-10-30T03:08:05.529
- Date updated
- 2025-10-30 03:21:00 UTC+0000
- Release date
- 2026-10-30 03:21:00 UTC+0000
- UTC Start
- 2025-10-30 03:08:05.529
- UTC End
- 2025-10-30 03:14:05.529
- MJD Start
- 60978.13061955
- MJD End
- 60978.134786216666
- Exposure time (s)
- 360.0
- Validation level
- 1
- Tau 0: Coherence time (s)
- 0.0050885
- Ambient temperature (°C)
- 13.79
- Seeing (arcsec)
- 0.605
Observation
- ID
- 71056
- Category
- science
- Program ID
- 116.28NC.001
- Program Title
- GRAVITY-GAIA DR4 EXOPLANET SURVEY IN NEARBY LOW-MASS BINARY SYSTEMS
- Program Type
- Normal
- PI / COI
- KERVELLA / GALLENNE / ARENOU / BEICHMAN / BOURDAROT / LACOUR / MENDEZ / MÉRAND / NOWAK
Target
- ID
- 52736
- Name
- HD_4391_B
- RA
- 11.434432083333332
- DEC
- -47.54899533333333
Instrument
- Interferometer
- VLTI
- Instrument
- GRAVITY_FT
- Instrument mode
- LOW
- Instrument sub-mode
- DUAL
- Stations
- A0 G1 J2 K0
Projected baselines
| Baseline | Length start | Length end | Angle start | Angle end |
|---|---|---|---|---|
| A0-G1 | 89.7160 | 89.9010 | 116.7000 | 117.8000 |
| A0-J2 | 129.2010 | 129.1240 | 95.2000 | 96.4000 |
| A0-K0 | 126.2050 | 125.8010 | 74.9360 | 76.0510 |
| G1-J2 | 56.2810 | 56.0320 | 59.5000 | 60.6000 |
| G1-K0 | 84.1740 | 83.8600 | 29.7140 | 30.5070 |
| J2-K0 | 45.0930 | 45.1420 | 351.3380 | 352.0730 |
Header: used keywords
| Key | Value |
|---|---|
| HIERARCH ESO OBS PROG ID | 116.28NC.001 |
| HIERARCH ESO DPR CATG | SCIENCE |
| HIERARCH ESO DPR TYPE | OBJECT,DUAL |
| MJD-OBS | 60978.13061955 |
| HIERARCH ESO DPR TECH | INTERFEROMETRY,WOLLASTON |
| HIERARCH ESO OBS TARG NAME | HD 4391 B |
| HIERARCH ESO INS SOBJ NAME | HD_4391_B |
| RA | 11.43293 |
| DEC | -47.54846 |
| HIERARCH ESO INS SPEC RES | MEDIUM |
| HIERARCH ESO INS POLA MODE | SPLIT |
| HIERARCH ESO ISS CONF NTEL | 4 |
| HIERARCH ESO ISS CONF STATION1 | A0 |
| HIERARCH ESO ISS CONF STATION2 | G1 |
| HIERARCH ESO ISS CONF STATION3 | J2 |
| HIERARCH ESO ISS CONF STATION4 | K0 |
| EXPTIME | 377.0 |
| HIERARCH ESO DET2 SEQ1 DIT | 30.0 |
| HIERARCH ESO DET2 NDIT | 12 |
| HIERARCH ESO ISS PBL12 START | 89.716 |
| HIERARCH ESO ISS PBL12 END | 89.901 |
| HIERARCH ESO ISS PBLA12 START | 116.7 |
| HIERARCH ESO ISS PBLA12 END | 117.8 |
| HIERARCH ESO ISS PBL13 START | 129.201 |
| HIERARCH ESO ISS PBL13 END | 129.124 |
| HIERARCH ESO ISS PBLA13 START | 95.2 |
| HIERARCH ESO ISS PBLA13 END | 96.4 |
| HIERARCH ESO ISS PBL14 START | 126.205 |
| HIERARCH ESO ISS PBL14 END | 125.801 |
| HIERARCH ESO ISS PBLA14 START | 74.936 |
| HIERARCH ESO ISS PBLA14 END | 76.051 |
| HIERARCH ESO ISS PBL23 START | 56.281 |
| HIERARCH ESO ISS PBL23 END | 56.032 |
| HIERARCH ESO ISS PBLA23 START | 59.5 |
| HIERARCH ESO ISS PBLA23 END | 60.6 |
| HIERARCH ESO ISS PBL24 START | 84.174 |
| HIERARCH ESO ISS PBL24 END | 83.86 |
| HIERARCH ESO ISS PBLA24 START | 29.714 |
| HIERARCH ESO ISS PBLA24 END | 30.507 |
| HIERARCH ESO ISS PBL34 START | 45.093 |
| HIERARCH ESO ISS PBL34 END | 45.142 |
| HIERARCH ESO ISS PBLA34 START | 351.338 |
| HIERARCH ESO ISS PBLA34 END | 352.073 |
| HIERARCH ESO ISS AMBI TAU0 START | 0.00543 |
| HIERARCH ESO ISS AMBI TAU0 END | 0.004747 |
| HIERARCH ESO ISS AMBI TEMP | 13.79 |
| HIERARCH ESO ISS AMBI FWHM START | 0.6 |
| HIERARCH ESO ISS AMBI FWHM END | 0.61 |
| HIERARCH ESO FT ROBJ NAME | HD_4391_B |
| HIERARCH ESO FT ROBJ ALPHA | 004544.2637 |
| HIERARCH ESO FT ROBJ DELTA | -473256.3832 |