| proportional counter array | PCA | 33 | 7 | 2.001162 | 9809407,9809087,etc |
| synchrotron self compton | SSC | 26 | 5 | 1.000886 | 9809248,9809251,etc |
| signal to noise | S/N | 35 | 5 | 2.000518 | 9809106,9809266,etc |
| inverse compton | IC | 46 | 4 | 2.001308 | 9809153,9809038,etc |
| burst and transient source experiment | BATSE | 42 | 4 | 2.001113 | 9809152,9809098,etc |
| all sky monitor | ASM | 70 | 4 | 2.002917 | 9809152,9809216,etc |
| tully fisher | TF | 210 | 4 | 2.006588 | 9809160,9809224,etc |
| faint object spectrograph | FOS | 43 | 4 | 2.00074 | 9809042,9809290,etc |
| goddard high resolution spectrograph | GHRS | 32 | 4 | 1.00042 | 9809180,9809128,etc |
| wolf rayet | W-R | 252 | 4 | 2.007537 | 9809015,9809188,etc |
| colour magnitude diagram | CMD | 24 | 3 | 1.00198 | 9809046,9809313,etc |
| double beam spectrograph | DBS | 5 | 3 | 1.000251 | 9809046,9809123,etc |
| rosat eso flux limited x ray | REFLEX | 18 | 3 | 1.001148 | 9809396,9809382,etc |
| kolmogorov smirnov | K-S | 9 | 3 | 1.000191 | 9809165,9809284,etc |
| full width half maximum | FWHM | 14 | 3 | 1.000436 | 9809404,9809190,etc |
| long wavelength | LW | 57 | 3 | 2.003039 | 9809284,9809122,etc |