30P/Reinmuth (0030P)

TRY AGAIN 2023

Type: Periodic Perihelion date: 18 August 2024 Perihelion distance (q): 1.7 Aphelion distance (Q) : 5.6 Period (years): 7.0 Eccentricity (e): 0.53 Inclination (i): 8.5 JPL orbit diagram COBS lightcurve The comet was discovered during the course of a regular photographic asteroid survey by Karl Reinmuth at Heidelberg Observatory on a photograph exposed on 22 February 1928. The comet's brightest apparition was that of 1928. At the time of discovery and for a few days thereafter, astronomers reported the magnitude as about 12 or 12.5. The return of 1935 was not as favourable and the comet only reached magnitude 15. A close approach to Jupiter in 1937 caused the perihelion distance to increase from 1.9 to 2.0 AU and the orbital period to increase from 7.23 to 7.69 years. The comet did not experience a return as favourable as that of 1928 through the 1980 apparition and did not become brighter than magnitude 17. The comet will approach 0.52 AU from Jupiter on 28 November 2020, which is expected to decrease the perihelion distance from 1.88 AU to 1.81 AU and the orbital period from 7.32 to 7.22 years. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 22-Nov-16 17.88 0.04 16.8 0.2 19-Dec-16 18.16 0.05 17.8 0.2 26-Dec-16 17.86 0.02 16.9 0.2 22-Jan-17 17.88 0.08 16.5 0.4 17-Apr-17 17.10 0.11 15.9 0.2 17-Mar-18 19.09 0.05 18.9 0.2