152P/Helin–Lawrence is a periodic comet in the Solar System.
| Discovery | |
|---|---|
| Discovered by | Eleanor F. Helin Kenneth J. Lawrence |
| Discovery date | May 17, 1993 |
| Designations | |
| 1993 XI; 2001 Y1 | |
| Orbital characteristics | |
| Epoch | March 6, 2006 |
| Aphelion | 5.884 AU |
| Perihelion | 3.108 AU |
| Semi-major axis | 4.496 AU |
| Eccentricity | 0.3087 |
| Orbital period | 9.534 a |
| Inclination | 9.8707° |
| Last perihelion | January 13, 2022[1][2] July 9, 2012[1] December 22, 2002 |
| Next perihelion | 2031-Jul-09[3] |
The comet came to perihelion on 9 July 2012,[1] and reached about apparent magnitude 17.[4]
References
edit- ^ a b c Syuichi Nakano (2011-02-06). "152P/Helin-Lawrence (NK 2031)". OAA Computing and Minor Planet Sections. Retrieved 2012-02-25.
- ^ "152P/Helin-Lawrence Orbit". Minor Planet Center. Retrieved 2014-06-18.
- ^ "Horizons Batch for 152P/Helin-Lawrence on 2031-Jul-09" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2022-06-22. (JPL#72 Soln.date: 2022-Jun-20)
- ^ Seiichi Yoshida (2011-09-03). "152P/Helin-Lawrence (2012)". Seiichi Yoshida's Comet Catalog. Retrieved 2012-02-25.
External links
edit- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 152P/Helin-Lawrence – Seiichi Yoshida @ aerith.net
- Elements and Ephemeris for 152P/Helin-Lawrence – Minor Planet Center
- 152P at Kronk's Cometography
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