1 Sek 1142 Apj 1987 !!top!! [Full Version]

However, there is an object: – a ROSAT/ Einstein X-ray source. But your string has "SEK" not "E" or "ES" (Einstein Slew).

Could "SEK" be an OCR error? Common OCR misreads: 1 sek 1142 apj 1987