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Table A.2.

Estimated uncertainties of mass measurements using astrometric microlensing with Gaia for single events with an epoch of the closest approach after 2019.5.

# Name-lens DR2_ID-lens DR2_ID-source TCA Min σM10 σM10/Min σMobs/Min
Jyear M M
34 L 702-43 4116840541184279296 4116840536790875904 2019.673 0.22 39% 27%
35 G 251-35 1136512191212093440 1136512191210614272* 2019.856 0.64 39% 39%
36 G 245-47A 546488928621555328 546488928619704320 2019.858 0.27 28% 26%
37 LAWD 37 5332606522595645952 5332606350796955904 2019.865 0.65 19% 12%
38 LSPM J2129+4720 1978296747258230912 1978296747268742784* 2019.960 0.34 38% 9.2%
39 5788178166117584640 5788178170416392192* 2020.126 0.54 22% 6.5%
40 G 16-29 4451575895403432064 4451575895400387968* 2020.214 0.51 37% 17%
41 HD 66553 654826970401335296 654826970399770368* 2020.309 0.87 12% 9%
42 HD 120065 1251328585567327744 1251328589861875840* 2020.344 1.2 44% 42%
43 HD 78663 3842095911266162432 3842095915561269888* 2020.356 0.8 34% 32%
44 HD 124584 5849427049801267200 5849427114177683584* 2020.742 1.2 39% 39%
45 Proxima Cen 5853498713160606720 5853498713181092224 2020.823 0.12 19% 19%
46 HD 222506 2390377345808152832 2390377350103204096* 2021.017 0.86 23% 9.8%
47 3670594366739201664 3670594366739201536* 2021.115 0.65 18% 5.8%
48 L 143-23 5254061535097566848 5254061535097574016 2021.188 0.12 43% 21%
49 HD 44573 2937651222655480832 2937651222651937408* 2021.226 0.77 22% 22%
50 CD-32 12693 5979367986779538432 5979367982463635840 2021.336 0.43 28% 25%
51 75 Cnc 689004018040211072 689004018038546560* 2021.378 1.4 7.6% 5.4%
52 OGLE SMC115.5 319 4687445500635789184 4687445599404851456 2021.500 0.65 20% 12%
53 HD 197484 6677000246203170944 6677000246201701120* 2021.579 0.99 26% 12%
54 LAWD 37 5332606522595645952 5332606350771972352 2022.226 0.65 47% 47%
55 BD+43 4138 1962597885872344704 1962597885867565312* 2022.663 0.96 49% 49%
56 L 100-115 5243594081269535872 5243594081263121792 2022.847 0.17 31% 27%
57 G 100-35B 3398414352092062720 3398414347798489472 2022.859 0.25 37% 33%
58 Proxima Cen 5853498713160606720 5853498713180840704 2023.349 0.12 40% 40%
59 5340884333294888064 5340884328994222208 2023.559 0.65 49% 48%
60 HD 18757 466294295706341760 466294295706435712 2023.762 1 35% 34%
61 Proxima Cen 5853498713160606720 5853498713180846592 2023.849 0.12 28% 27%
62 OGLE LMC162.5 41235 4657982643495556608 4657982639152973184 2024.283 0.65 35% 30%
63 L 31-84 4623882630333283328 4623882630333283968 2024.593 0.35 25% 12%
64 61 Cyg B 1872046574983497216 1872046605038072448 2024.661 0.55 24% 11%
65 HD 207450 6585158207436506368 6585158211732350592* 2025.805 1.2 35% 3.5%

Notes. The table lists the name (Name-Lens) and Gaia DR2 source ID (DR2_ID-Lens) of the lens and the source ID of the background sources (DR2_ID-source). An asterisk indicates that Gaia DR2 only provides the position of the sources. In addition, the table lists the epoch of the closest approach (TCA) and the assumed mass of the lens (Min). The expected precision arising from the use of data from the extended ten-year mission is given in (σM10), including the uncertainty due to the errors in the input parameters, and as a percentage (σM10/Min). The expected relative precision while including two external 2D observations is given in (σMobs/Min).

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