IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
artículos
Título:
Orbit of comet C/1857 D1 (d'Arrest)
Autor/es:
BRANHAM, RICHARD L. JR.
Revista:
ASTRONOMISCHE NACHRICHTEN
Editorial:
WILEY-V C H VERLAG GMBH
Referencias:
Lugar: Weinheim; Año: 2011 vol. 332 p. 676 - 676
ISSN:
0004-6337
Resumen:
Comet C/ 1857 D1 (d?Arrest) is one of a large number of comets with parabolic orbits. Given that there are sufficient observations of the comet, 299 in right ascension and 279 in declination, it proves possible to calculate a better orbit. The calculations are based on a 12th order predictor-corrector method. The comet?s orbit is highly elliptical, e = 0.99982 and, from calculated mean errors, statistically different from a parabola. The comet will not return for at least 44 000 years and thus represents no immediate NEO threat.ficient observations of the comet, 299 in right ascension and 279 in declination, it proves possible to calculate a better orbit. The calculations are based on a 12th order predictor-corrector method. The comet?s orbit is highly elliptical, e = 0.99982 and, from calculated mean errors, statistically different from a parabola. The comet will not return for at least 44 000 years and thus represents no immediate NEO threat.e = 0.99982 and, from calculated mean errors, statistically different from a parabola. The comet will not return for at least 44 000 years and thus represents no immediate NEO threat.