A kinematic history of stellar encounters with Beta Pictoris

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Table 4

Comparison of encounter parameters with those reported by Kalas et al. (2001).

Hipparcos ID	Gaia DR3 ID	Encounter time (Myr)		Encounter distance (pc)		Encounter velocity (km s⁻¹)

		Kalas et al.	This work	Kalas et al.	This work	Kalas et al.	This work
10798	5117974602912370432	$- {0.318}_{- 0.015}^{+ 0.012}$ $- 0.318_{ - 0.015}^{ + 0.012}$	$- {0.346}_{- 0.007}^{+ 0.007}$ $- 0.346_{ - 0.007}^{ + 0.007}$	${1.88}_{- 0.40}^{+ 0.51}$ $1.88_{ - 0.40}^{ + 0.51}$	${1.27}_{- 0.21}^{+ 0.22}$ $1.27_{ - 0.21}^{ + 0.22}$	42.8 ± 1.3	40.2 ± 0.4
17378	5164120762333028736	$- {0.295}_{- 0.018}^{+ 0.017}$ $- 0.295_{ - 0.018}^{ + 0.017}$	$- {0.320}_{- 0.007}^{+ 0.008}$ $- 0.320_{ - 0.007}^{ + 0.008}$	${3.96}_{- 0.41}^{+ 0.42}$ $3.96_{ - 0.41}^{ + 0.42}$	${3.94}_{- 0.07}^{+ 0.07}$ $3.94_{ - 0.07}^{ + 0.07}$	47.9 ± 1.5	45.0 ± 0.5
19893	4781833626056162688	$- {0.031}_{- 0.036}^{+ 0.035}$ $- 0.031_{ - 0.036}^{ + 0.035}$	$- {0.024}_{- 0.017}^{+ 0.016}$ $- 0.024_{ - 0.017}^{ + 0.016}$	${4.94}_{- 0.14}^{+ 0.19}$ $4.94_{ - 0.14}^{ + 0.19}$	${5.02}_{- 0.09}^{+ 0.09}$ $5.02_{ - 0.09}^{ + 0.09}$	13.4 ± 1.4	14.8 ± 0.8
19921	4678664766393829504¹	$- {0.119}_{- 0.009}^{+ 0.012}$ $- 0.119_{ - 0.009}^{ + 0.012}$	$- {0.101}_{- 0.005}^{+ 0.005}$ $- 0.101_{ - 0.005}^{ + 0.005}$	${3.74}_{- 0.33}^{+ 0.31}$ $3.74_{ - 0.33}^{ + 0.31}$	${4.19}_{- 0.22}^{+ 0.21}$ $4.19_{ - 0.22}^{ + 0.21}$	28.6 ± 0.6	29.8 ± 0.3
22122	4784805056230587392²	$- {0.034}_{- 0.006}^{+ 0.006}$ $- 0.034_{ - 0.006}^{ + 0.006}$	$- {0.034}_{- 0.001}^{+ 0.001}$ $- 0.034_{ - 0.001}^{ + 0.001}$	${2.76}_{- 0.18}^{+ 0.56}$ $2.76_{ - 0.18}^{ + 0.56}$	${2.74}_{- 0.05}^{+ 0.05}$ $2.74_{ - 0.05}^{ + 0.05}$	62.7 ± 1.5	62.3 ± 0.2
23693	4763906879239461632¹	$- {0.356}_{- 0.032}^{+ 0.029}$ $- 0.356_{ - 0.032}^{ + 0.029}$	$- {0.447}_{- 0.020}^{+ 0.020}$ $- 0.447_{ - 0.020}^{ + 0.020}$	${0.92}_{- 0.12}^{+ 0.13}$ $0.92_{ - 0.12}^{ + 0.13}$	${0.78}_{- 0.08}^{+ 0.08}$ $0.78_{ - 0.08}^{ + 0.08}$	21.6 ± 1.5	18.0 ± 0.5
25544	4759543295545939840	$- {0.116}_{- 0.009}^{+ 0.009}$ $- 0.116_{ - 0.009}^{ + 0.009}$	$- {0.123}_{- 0.002}^{+ 0.002}$ $- 0.123_{ - 0.002}^{ + 0.002}$	${1.49}_{- 0.30}^{+ 0.39}$ $1.49_{ - 0.30}^{ + 0.39}$	${1.26}_{- 0.08}^{+ 0.08}$ $1.26_{ - 0.08}^{ + 0.08}$	25.5 ± 0.9	24.5 ± 0.2
27628	2887731882922767744	$- {0.107}_{- 0.012}^{+ 0.015}$ $- 0.107_{ - 0.012}^{ + 0.015}$	$- {0.108}_{- 0.004}^{+ 0.004}$ $- 0.108_{ - 0.004}^{ + 0.004}$	${0.58}_{- 0.11}^{+ 0.51}$ $0.58_{ - 0.11}^{ + 0.51}$	${0.75}_{- 0.22}^{+ 0.21}$ $0.75_{ - 0.22}^{ + 0.21}$	83.9 ± 2.1	87.0 ± 1.3
29568	2913411183149615744¹	$- {0.693}_{- 0.047}^{+ 0.044}$ $- 0.693_{ - 0.047}^{ + 0.044}$	$- {0.743}_{- 0.026}^{+ 0.026}$ $- 0.743_{ - 0.026}^{ + 0.026}$	${2.95}_{- 0.32}^{+ 0.90}$ $2.95_{ - 0.32}^{ + 0.90}$	${4.93}_{- 0.39}^{+ 0.38}$ $4.93_{ - 0.39}^{ + 0.38}$	11.6 ± 0.5	10.1 ± 0.2
29958	2993676867708999296	$- {0.198}_{- 0.029}^{+ 0.032}$ $- 0.198_{ - 0.029}^{ + 0.032}$	$- {0.177}_{- 0.002}^{+ 0.002}$ $- 0.177_{ - 0.002}^{ + 0.002}$	${1.00}_{- 0.40}^{+ 2.36}$ $1.00_{ - 0.40}^{ + 2.36}$	${3.27}_{- 0.30}^{+ 0.31}$ $3.27_{ - 0.30}^{ + 0.31}$	102.1 ± 5.6	97.4 ± 0.8
31711	5479778765278589568²	$- {0.189}_{- 0.076}^{+ 0.050}$ $- 0.189_{ - 0.076}^{ + 0.050}$	$- {0.175}_{- 0.046}^{+ 0.047}$ $- 0.175_{ - 0.046}^{ + 0.047}$	${3.97}_{- 0.31}^{+ 0.37}$ $3.97_{ - 0.31}^{ + 0.37}$	${4.05}_{- 0.13}^{+ 0.13}$ $4.05_{ - 0.13}^{ + 0.13}$	14.6 ± 1.4	17.5 ± 1.2
37504	5263150888430619904	$- {0.643}_{- 0.038}^{+ 0.053}$ $- 0.643_{ - 0.038}^{ + 0.053}$	$- {0.669}_{- 0.022}^{+ 0.022}$ $- 0.669_{ - 0.022}^{ + 0.022}$	${4.59}_{- 0.91}^{+ 1.52}$ $4.59_{ - 0.91}^{ + 1.52}$	${4.20}_{- 0.52}^{+ 0.50}$ $4.20_{ - 0.52}^{ + 0.50}$	37.6 ± 1.5	40.5 ± 0.4
38908	5291028181119851776¹	$- {0.140}_{- 0.009}^{+ 0.006}$ $- 0.140_{ - 0.009}^{ + 0.006}$	$- {0.134}_{- 0.002}^{+ 0.002}$ $- 0.134_{ - 0.002}^{ + 0.002}$	${1.97}_{- 0.42}^{+ 0.69}$ $1.97_{ - 0.42}^{ + 0.69}$	${2.87}_{- 0.24}^{+ 0.25}$ $2.87_{ - 0.24}^{ + 0.25}$	49.5 ± 0.8	48.1 ± 0.2
83990	5914096303621755520	$- {0.304}_{- 0.015}^{+ 0.018}$ $- 0.304_{ - 0.015}^{ + 0.018}$	$- {0.323}_{- 0.005}^{+ 0.005}$ $- 0.323_{ - 0.005}^{ + 0.005}$	${3.92}_{- 1.16}^{+ 1.18}$ $3.92_{ - 1.16}^{ + 1.18}$	${2.29}_{- 0.21}^{+ 1.21}$ $2.29_{ - 0.21}^{ + 1.21}$	60.4 ± 1.5	57.0 ± 0.4
89042	6634032740544236032²	$- {0.397}_{- 0.023}^{+ 0.020}$ $- 0.397_{ - 0.023}^{ + 0.020}$	$- {0.408}_{- 0.003}^{+ 0.003}$ $- 0.408_{ - 0.003}^{ + 0.003}$	${4.15}_{- 0.22}^{+ 0.22}$ $4.15_{ - 0.22}^{ + 0.22}$	${4.38}_{- 0.31}^{+ 0.31}$ $4.38_{ - 0.31}^{ + 0.31}$	50.6 ± 1.6	48.3 ± 0.3
114996	6492406743706907776²	$- {0.596}_{- 0.043}^{+ 0.033}$ $- 0.596_{ - 0.043}^{ + 0.033}$	$- {0.606}_{- 0.056}^{+ 0.057}$ $- 0.606_{ - 0.056}^{ + 0.057}$	${3.94}_{- 1.77}^{+ 1.35}$ $3.94_{ - 1.77}^{ + 1.35}$	${12.31}_{- 1.86}^{+ 1.88}$ $12.31_{ - 1.86}^{ + 1.88}$	29.3 ± 0.8	22.7 ± 0.7
116250	6353376831270492800	$- {0.884}_{- 0.067}^{+ 0.062}$ $- 0.884_{ - 0.067}^{ + 0.062}$	$- {0.853}_{- 0.012}^{+ 0.012}$ $- 0.853_{ - 0.012}^{ + 0.012}$	${2.79}_{- 1.92}^{+ 2.39}$ $2.79_{ - 1.92}^{ + 2.39}$	${1.38}_{- 0.28}^{+ 0.27}$ $1.38_{ - 0.28}^{ + 0.27}$	22.9 ± 1.7	23.9 ± 0.3

Notes. The first two columns list the HIPPARCOS IDs and the corresponding GDR3 IDs. To compare with Kalas et al. (2001) results, we computed time-distance uncertainties as the limits of the 2D 1σ contours (39.35%), based on Mahalanobis distances. Velocity uncertainties are given as 1σ intervals of the marginal distributions (13.6^th–86.4^th percentiles). The full table is available on Zenodo. ⁽¹⁾According to SIMBAD, this star belongs to a binary or multiple system. ⁽²⁾This HIPPARCOS-Gaia identification was taken from SIMBAD, as it is not present in the Gaia Archive crossmatch tables.

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