Inflight calibration of the optical navigation camera for the extended mission phase of Hayabusa2

Yamada, Manabu; Kouyama, Toru; Yumoto, Koki; Tatsumi, Eri; Takaki, Naofumi; Yokota, Yasuhiro; Morota, Tomokatsu; Sakatani, Naoya; Hayakawa, Masahiko; Matsuoka, Moe; Honda, Rie; Honda, Chikatoshi; Kameda, Shingo; Suzuki, Hidehiko; Cho, Yuichiro; Yoshioka, Kazuo; Ogawa, Kazunori; Shirai, Kei; Sawada, Hirotaka; Sugita, Seiji

doi:10.1186/s40623-023-01789-5

Earth, Planets and Space

Table 2 List of stars used in Fig. 7

From: Inflight calibration of the optical navigation camera for the extended mission phase of Hayabusa2

Observation date	Star name	HR no	V mag	Spectral type	Filters	Reference spectra
2016-10-19	ζ Peg	8634	3.40	B8V	ul, b, v, Na, w, x, p	Hamuy et al. (1992, 1994)
2017-05-23	θ Crt	4468	4.70	B9.5Vn	ul, b, v, Na, w, x, p	Hamuy et al. (1992, 1994)
2017-10-10	ε Aqr	7950	3.77	A1V	ul, b, v, Na, w, x, p	Hamuy et al. (1992, 1994)
2017-10-12	σ Sgr	7172	2.02	B2.5V	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
Arrival (2018-06-27)
2018-08-25	β Vir	4540	3.60	F9V	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
2018-11-09	β Sco	5984	2.62	B1V	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
TD1 (2019-02-21)
2019-03-09	ε Aqr	7950	3.77	A1V	ul, b, v, Na, w, x, p	Hamuy et al. (1992, 1994)
TD2 (2019-07-11)
2019-07-14	ι Aur	1577	2.69	K3II	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
2019-07-18	β Tau	1791	1.65	B7III	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
2019-09-26	η Leo	3975	3.45	A0Ib	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
2019-11-03	γ Crv	4662	2.56	B8III	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
Departure (2019-11-13)
2020-03-15	τ Sco	6165	2.82	B0.2V	ul, b, v, Na, w	Alekseeva et al. (1996)
2020-05-04	σ Sgr	7172	2.02	B2.5V	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
Capsule re-entry operation (2020-12-05)
2020-12-19	κ Ori	2004	2.06	B0.5Ia	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
2021-04-16	β Sco	5984	2.62	B1V	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
2021-05-17	σ Sgr	7172	2.02	B2.5V	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
2022-01-19	β Vir	4540	3.60	F9V	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
2022-03-03	β Sco	5984	2.62	B1V	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)
2022-04-11	σ Sgr	7172	2.02	B2.5V	ul, b, v, Na, w, x, p	Alekseeva et al. (1996)

Note that ε Aqr, β Sco, and σ Sgr were observed two times, three times, and four times, respectively

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