Table 3: X-ray sources with at least an optical counterpart which is a cluster non-member or has no membership information. See Table 1 for the meaning of the "set'' column.
RA $_{\rm X}$ DEC $_{\rm X}$ ML set count rate Optical ID $\Delta r$ Notes

(J2000) (cts/ksec) ( $\;\hbox{$^{\prime\prime}$ }\;$ )

$8\>38\>58.02$ $19\>33\>35.6$ 597.3 S $5.66 \pm 0.41$ GSC2 N23123008603 1.96

$8\>39\>04.18$ $19\>23\>39.0$ 17.8 P $4.53 \pm 1.26$ KW 144 5.56 non-member

$8\>39\>07.02$ $19\>21\>51.2$ 5731.7 S $39.25 \pm 1.20$ 4C 19.31 2.92 quasar

$8\>39\>10.39$ $19\>33\>29.2$ 225.8 S $3.47 \pm 0.33$ GSC2 N23123008580 2.17

$8\>39\>10.86$ $19\>35\>12.7$ 75.6 S $1.01 \pm 0.17$ GSC2 N23123009122 3.21

GSC2 N23123009123 4.86

$8\>39\>14.25$ $19\>33\>23.4$ 33.7 S $0.53 \pm 0.11$ KW 163 2.69 non-member

$8\>39\>16.09$ $19\>42\>49.0$ 561.4 S $4.95 \pm 0.34$ GSC2 N23122206641 1.06

$8\>39\>16.17$ $19\>38\>16.5$ 119.3 S $1.84 \pm 0.24$ GSC2 N23122205633 7.87

$8\>39\>26.39$ $19\>36\>58.9$ 32.0 S $0.44 \pm 0.10$ GSC2 N23122205462 4.34

$8\>39\>36.65$ $19\>45\>10.8$ 357.9 S $3.76 \pm 0.31$ GSC2 N23122207129 0.81

$8\>39\>43.41$ $19\>25\>13.3$ 429.1 S $2.08 \pm 0.16$ KW 206 0.69 non-member, B-V=1.40

$8\>39\>50.97$ $19\>19\>12.5$ 15.1 S $0.49 \pm 0.14$ KW 211 6.99 non-member

$8\>39\>55.80$ $19\>36\>35.0$ 10.3 P $0.97 \pm 0.33$ GSC2 N23122205423 7.52

$8\>39\>56.87$ $19\>43\>00.9$ 301.7 S $2.13 \pm 0.19$ WJJP 95 2.84 non-member, B-V=0.90, Wang et al.

$8\>40\>05.07$ $19\>38\>18.2$ 1398.9 S $3.98 \pm 0.19$ AKS 83 2.72 Andruk et al. (1995)

$8\>40\>09.54$ $19\>31\>53.6$ 62.3 S $0.44 \pm 0.08$ KW 262 2.55 non-member

$8\>40\>10.73$ $19\>26\>31.9$ 39.3 S $0.45 \pm 0.09$ KW 266 3.27 non-member, B-V=0.41

$8\>40\>11.87$ $19\>28\>24.5$ 60.5 S $0.55 \pm 0.09$ GSC2 N23122203751 5.61

$8\>40\>13.00$ $19\>28\>05.3$ 155.9 S $0.97 \pm 0.11$ GSC2 N23122203733 1.01

GSC2 N23122203734 6.08

$8\>40\>21.72$ $19\>21\>14.1$ 16.1 S $0.41 \pm 0.12$ 2MASS J0840219+192117 4.86

$8\>40\>35.17$ $19\>32\>03.1$ 165.9 S $1.16 \pm 0.13$ KW 317 1.09 non-member, B-V=0.58

$8\>40\>37.97$ $19\>36\>33.2$ 12.8 S $0.27 \pm 0.09$ 2MASS J0840379+193628 4.57

$8\>40\>39.04$ $19\>24\>44.7$ 279.3 S $4.51 \pm 0.44$ GSC2 N23122203337 8.42

$8\>40\>47.30$ $19\>32\>39.6$ 183.4 S $1.53 \pm 0.17$ KW 333 2.59 non-member, B-V=0.90

**Table 3:** X-ray sources with at least an optical counterpart which is a cluster non-member or has no membership information. See Table 1 for the meaning of the "set'' column.
RA $_{\rm X}$	DEC $_{\rm X}$	ML	set	count rate	Optical ID	$\Delta r$	Notes
(J2000)			(cts/ksec)		( $\;\hbox{$^{\prime\prime}$ }\;$ )
$8\>38\>58.02$	$19\>33\>35.6$	597.3	S	$5.66 \pm 0.41$	GSC2 N23123008603	1.96
$8\>39\>04.18$	$19\>23\>39.0$	17.8	P	$4.53 \pm 1.26$	KW 144	5.56	non-member
$8\>39\>07.02$	$19\>21\>51.2$	5731.7	S	$39.25 \pm 1.20$	4C 19.31	2.92	quasar
$8\>39\>10.39$	$19\>33\>29.2$	225.8	S	$3.47 \pm 0.33$	GSC2 N23123008580	2.17
$8\>39\>10.86$	$19\>35\>12.7$	75.6	S	$1.01 \pm 0.17$	GSC2 N23123009122	3.21
					GSC2 N23123009123	4.86
$8\>39\>14.25$	$19\>33\>23.4$	33.7	S	$0.53 \pm 0.11$	KW 163	2.69	non-member
$8\>39\>16.09$	$19\>42\>49.0$	561.4	S	$4.95 \pm 0.34$	GSC2 N23122206641	1.06
$8\>39\>16.17$	$19\>38\>16.5$	119.3	S	$1.84 \pm 0.24$	GSC2 N23122205633	7.87
$8\>39\>26.39$	$19\>36\>58.9$	32.0	S	$0.44 \pm 0.10$	GSC2 N23122205462	4.34
$8\>39\>36.65$	$19\>45\>10.8$	357.9	S	$3.76 \pm 0.31$	GSC2 N23122207129	0.81
$8\>39\>43.41$	$19\>25\>13.3$	429.1	S	$2.08 \pm 0.16$	KW 206	0.69	non-member, B-V=1.40
$8\>39\>50.97$	$19\>19\>12.5$	15.1	S	$0.49 \pm 0.14$	KW 211	6.99	non-member
$8\>39\>55.80$	$19\>36\>35.0$	10.3	P	$0.97 \pm 0.33$	GSC2 N23122205423	7.52
$8\>39\>56.87$	$19\>43\>00.9$	301.7	S	$2.13 \pm 0.19$	WJJP 95	2.84	non-member, B-V=0.90, Wang et al.
$8\>40\>05.07$	$19\>38\>18.2$	1398.9	S	$3.98 \pm 0.19$	AKS 83	2.72	Andruk et al. (1995)
$8\>40\>09.54$	$19\>31\>53.6$	62.3	S	$0.44 \pm 0.08$	KW 262	2.55	non-member
$8\>40\>10.73$	$19\>26\>31.9$	39.3	S	$0.45 \pm 0.09$	KW 266	3.27	non-member, B-V=0.41
$8\>40\>11.87$	$19\>28\>24.5$	60.5	S	$0.55 \pm 0.09$	GSC2 N23122203751	5.61
$8\>40\>13.00$	$19\>28\>05.3$	155.9	S	$0.97 \pm 0.11$	GSC2 N23122203733	1.01
					GSC2 N23122203734	6.08
$8\>40\>21.72$	$19\>21\>14.1$	16.1	S	$0.41 \pm 0.12$	2MASS J0840219+192117	4.86
$8\>40\>35.17$	$19\>32\>03.1$	165.9	S	$1.16 \pm 0.13$	KW 317	1.09	non-member, B-V=0.58
$8\>40\>37.97$	$19\>36\>33.2$	12.8	S	$0.27 \pm 0.09$	2MASS J0840379+193628	4.57
$8\>40\>39.04$	$19\>24\>44.7$	279.3	S	$4.51 \pm 0.44$	GSC2 N23122203337	8.42
$8\>40\>47.30$	$19\>32\>39.6$	183.4	S	$1.53 \pm 0.17$	KW 333	2.59	non-member, B-V=0.90

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