Table 4: Source detections in the ROSAT PSPC observation of NGC 2903 with a maximum likelihood threshold of 14 (5$\sigma $).
No. RA (2000) Dec (2000) Existence Count rate (PSPC)a No. Identification
      likelihood [10-3 cts s-1] (HRI)  
1 9$^{\rm h}$ 32$^{\rm m}$ 13 $.\!\!^{\rm s}$2 +21$^\circ $51$^\prime$35 $^{\prime\prime}$ 31 $7.6\pm$1.4   HD 82394 / BD  +22 2102B
2 9$^{\rm h}$ 32$^{\rm m}$ 12 $.\!\!^{\rm s}$9 +21$^\circ $48$^\prime$12 $^{\prime\prime}$ 20 $4.4\pm1.0$    
3 9$^{\rm h}$ 33$^{\rm m}$ 14 $.\!\!^{\rm s}$3 +21$^\circ $46$^\prime$00 $^{\prime\prime}$ 31 $9.9\pm1.6$    
4 9$^{\rm h}$ 31$^{\rm m}$ 55 $.\!\!^{\rm s}$2 +21$^\circ $43$^\prime$58 $^{\prime\prime}$ 19 $4.4\pm1.0$   QSO 0929+2157
5 9$^{\rm h}$ 32$^{\rm m}$ 33 $.\!\!^{\rm s}$3 +21$^\circ $41$^\prime$54 $^{\prime\prime}$ 36 $5.1\pm1.0$    
6 9$^{\rm h}$ 30$^{\rm m}$ 56 $.\!\!^{\rm s}$5 +21$^\circ $34$^\prime$34 $^{\prime\prime}$ 37 $6.7\pm1.2$    
7 9$^{\rm h}$ 32$^{\rm m}$ 56 $.\!\!^{\rm s}$3 +21$^\circ $33$^\prime$57 $^{\prime\prime}$ 23 $3.5\pm0.8$    
8 9$^{\rm h}$ 31$^{\rm m}$ 25 $.\!\!^{\rm s}$6 +21$^\circ $33$^\prime$46 $^{\prime\prime}$ 46 $5.1\pm0.9$    
9 9$^{\rm h}$ 32$^{\rm m}$ 05 $.\!\!^{\rm s}$5 +21$^\circ $32$^\prime$33 $^{\prime\prime}$ 33 $3.6\pm0.8$ 1 H II region in NGC 2903
10 9$^{\rm h}$ 33$^{\rm m}$ 21 $.\!\!^{\rm s}$9 +21$^\circ $32$^\prime$12 $^{\prime\prime}$ 214 $21.6\pm1.8$ 2 2E 0930.5+2145
11 9$^{\rm h}$ 32$^{\rm m}$ 09 $.\!\!^{\rm s}$9 +21$^\circ $30$^\prime$14 $^{\prime\prime}$ 1157 $73.8\pm3.0$ 3 NGC 2903
12 9$^{\rm h}$ 31$^{\rm m}$ 20 $.\!\!^{\rm s}$7 +21$^\circ $29$^\prime$44 $^{\prime\prime}$ 19 $3.0\pm0.8$    
13 9$^{\rm h}$ 30$^{\rm m}$ 59 $.\!\!^{\rm s}$9 +21$^\circ $29$^\prime$09 $^{\prime\prime}$ 18 $3.7\pm0.9$    
14 9$^{\rm h}$ 31$^{\rm m}$ 48 $.\!\!^{\rm s}$7 +21$^\circ $24$^\prime$48 $^{\prime\prime}$ 19 $2.6\pm0.7$ 4  
15 9$^{\rm h}$ 31$^{\rm m}$ 44 $.\!\!^{\rm s}$4 +21$^\circ $17$^\prime$04 $^{\prime\prime}$ 33 $5.0\pm1.0$    
16 9$^{\rm h}$ 32$^{\rm m}$ 06 $.\!\!^{\rm s}$3 +21$^\circ $15$^\prime$03 $^{\prime\prime}$ 17 $4.7\pm1.1$   QSO 0929+2128
17 9$^{\rm h}$ 33$^{\rm m}$ 47 $.\!\!^{\rm s}$9 +21$^\circ $14$^\prime$33 $^{\prime\prime}$ 376 $55.2\pm3.3$   QSO 0930+2128
18 9$^{\rm h}$ 30$^{\rm m}$ 45 $.\!\!^{\rm s}$5 +21$^\circ $02$^\prime$17 $^{\prime\prime}$ 50 $18.7\pm2.5$   HD 82157

a Background subtracted.

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