Table A.1.
Estimated uncertainties of mass measurements using astrometric microlensing with Gaia for single events that have an epoch of the closest approach during the nominal Gaia mission.
| # | Name-lens | DR2_ID-lens | DR2_ID-source | TCA | Min | σ M10 | σ M10/Min | σ M5 |
|---|---|---|---|---|---|---|---|---|
| Jyear | M⊙ | M⊙ | M⊙ | |||||
| 1 | HD 22399 | 488099359330834432 | 488099363630877824* | 2013.711 | 1.3 |
 |
47% | |
| 2 | HD 177758 | 4198685678421509376 | 4198685678400752128* | 2013.812 | 1.1 |
 |
36% | |
| 3 | L 820-19 | 5736464668224470400 | 5736464668223622784* | 2014.419 | 0.28 |
 |
21% |
 |
| 4 | 2081388160068434048 | 2081388160059813120* | 2014.526 | 0.82 |
 |
47% | ||
| 5 | 478978296199510912 | 478978296204261248 | 2014.692 | 0.65 |
 |
36% |
 |
|
| 6 | G 123-61B | 1543076475514008064 | 1543076471216523008* | 2014.763 | 0.26 |
 |
37% |
 |
| 7 | L 601-78 | 5600272625752039296 | 5600272629670698880* | 2014.783 | 0.21 |
 |
19% |
 |
| 8 | UCAC3 27-74415 | 6368299918479525632 | 6368299918477801728* | 2015.284 | 0.36 |
 |
13% |
 |
| 9 | BD+00 5017 | 2646280705713202816 | 2646280710008284416* | 2015.471 | 0.58 |
 |
30% |
 |
| 10 | G 123-61A | 1543076475509704192 | 1543076471216523008* | 2016.311 | 0.32 |
 |
24% |
 |
| 11 | EC 19249-7343 | 6415630939116638464 | 6415630939119055872* | 2016.650 | 0.26 |
 |
38% | |
| 12 | 5312099874809857024 | 5312099870497937152 | 2016.731 | 0.07 |
 |
12% |
 |
|
| 13 | PM J08503-5848 | 5302618648583292800 | 5302618648591015808 | 2017.204 | 0.65 |
 |
26% |
 |
| 14 | 5334619419176460928 | 5334619414818244992 | 2017.258 | 0.65 |
 |
35% |
 |
|
| 15 | Proxima Cen | 5853498713160606720 | 5853498708818460032 | 2017.392 | 0.12 |
 |
29% |
 |
| 16 | Innes’ star | 5339892367683264384 | 5339892367683265408 | 2017.693 | 0.33 |
 |
48% |
 |
| 17 | L 51-47 | 4687511776265158400 | 4687511780573305984 | 2018.069 | 0.28 |
 |
12% |
 |
| 18 | 4970215770740383616 | 4970215770743066240 | 2018.098 | 0.65 |
 |
12% |
 |
|
| 19 | BD-06 855 | 3202470247468181632 | 3202470247468181760* | 2018.106 | 0.8 |
 |
46% |
 |
| 20 | G 217-32 | 429297924157113856 | 429297859741477888* | 2018.134 | 0.23 |
 |
7.5% |
 |
| 21 | 5865259639247544448 | 5865259639247544064* | 2018.142 | 0.8 |
 |
6.6% |
 |
|
| 22 | HD 146868 | 1625058605098521600 | 1625058605097111168* | 2018.183 | 0.92 |
 |
6.5% |
 |
| 23 | Ross 733 | 4516199240734836608 | 4516199313402714368 | 2018.282 | 0.43 |
 |
15% |
 |
| 24 | LP 859-51 | 6213824650812054528 | 6213824650808938880* | 2018.359 | 0.43 |
 |
43% | |
| 25 | L 230-188 | 4780100658292046592 | 4780100653995447552 | 2018.450 | 0.15 |
 |
49% |
 |
| 26 | HD 149192 | 5930568598406530048 | 5930568568425533440* | 2018.718 | 0.67 |
 |
6.3% |
 |
| 27 | HD 85228 | 5309386791195469824 | 5309386795502307968* | 2018.751 | 0.82 |
 |
5.1% |
 |
| 28 | HD 155918 | 5801950515627094400 | 5801950515623081728* | 2018.773 | 1 |
 |
13% |
 |
| 29 | HD 77006 | 1015799283499485440 | 1015799283498355584* | 2018.796 | 1 |
 |
41% | |
| 30 | Proxima Cen | 5853498713160606720 | 5853498713181091840 | 2018.819 | 0.12 |
 |
16% |
 |
| 31 | HD 2404 | 2315857227976341504 | 2315857227975556736* | 2019.045 | 0.84 |
 |
22% | |
| 32 | LP 350-66 | 2790883634570755968 | 2790883634570196608* | 2019.299 | 0.32 |
 |
46% | |
| 33 | HD 110833 | 1568219729458240128 | 1568219729456499584* | 2019.360 | 0.78 |
 |
7.2% |
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 (σ M10), including the uncertainty due to the errors in the input parameters, and as a percentage (σ M10/Min). The expected precision arising from the use of data from the nominal five-year mission is given in (σ M5) if it is below 100% of the input mass.
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