Table 1
Overview of the BRITE, HIPPARCOS, and SMEI observations.
| Satellite name (acronym) | Porbit (min) | Year (s) | JD-2400000 (start-end) | CCDT (°C) | Contig. time (min) | No. of setups | texp (s) | No. of observ. | No. of TSA data points |
|---|---|---|---|---|---|---|---|---|---|
| HIPPARCOS | 637.2 | 1989–1993 | 47 860–49 051 | N/A | N/A | N/A | ∼20 | 115 | 115 |
| SMEI | 101.5 | 2003–2011 | 52 673–55 833 | N/A | N/A | N/A | ∼900 | 38 617 | 31 707 |
| BRITE-Heweliusz | 97.1 | 2015 | 57 098–57 176 | 9.3–18.8 | 2.6–29.8 | 3 | 1 | 47 816 | 487 |
| (BHr) | 2017 | 57 760–57 784 | 13.3–22.2 | 4.7–20.1 | 1 | 4 | 15 542 | 257 | |
| 2017/18 | 58 066–58 222 | 0.9–23.8 | 3.0–21.4 | 7 | 4 | 63 886 | 1433 | ||
| BRITE-Lem | 99.6 | 2016/17 | 57 738–57 910 | 18.2–34.6 | 4.0–13.9 | 5 | 2 | 82 516 | 1382 |
| (BLb) | |||||||||
| BRITE-Toronto | 98.2 | 2016/17 | 57 697–57 877 | 2.9–20.4 | 3.7–15.7 | 6 | 4 | 65 260 | 1822 |
| (BTr) |
Notes. Information not available for HIPPARCOS and SMEI is flagged as “N/A”. Suffixes “b” and “r” in the acronyms of BRITE satellites identify the spectral passband (blue and red). “CCDT” is the detector temperature range. “Contig. time” denotes the typical time interval per satellite orbit during which exposures were made. “No. of TSA data points” is the number of data points (in the case of BRITE formed as orbital averages from the elementary measurements) and used for time-series analysis. Intervals between start and end dates include gaps.
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