| Identity |
| Name: | Propus, eta Geminorum |
| Hipparcos catalog ID: | 29655 |
| Other star catalog entries: | HD 42995 SAO 78135 BD B+22 1241
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| Appearance |
| Visual magnitude: | 3.31 (source: Hipparcos) |
| Spectral type: | M3III |
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| Position and motion (Epoch J1991.25) in J2000 reference frame |
| Right ascension | 6h 14m 52.69659s (+/-0.00009s) |
| Declination | 22° 30' 24.5657" (+/-0.0006") |
| Parallax: | 8.48 (+/-1.23) mas |
| Derived distance: | 385 light-years |
| Proper motion in R.A.: | -62.46 (+/-1.06) mas/year |
| Proper motion in declination: | -12.12 (+/-0.7) mas/year |
| Constellation: | Gemini | |