A comparative study of the blue comets C/1908 R1 (Morehouse) and C/2016 R2 (Pan-STARRS)

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Table 1

Osculating orbital elements of C/1908 R1 and C/2016 R2 used during our dynamical study.

Element	C/1908 R1 (Morehouse)	C/2016 R2 (Pan-STARRS)
Date	1908-Oct.-31.0	2018-May-29.0
e	1.0009 ± .0002	.9963 ± 1.9501−6
a (au)	−1023.0389 ± 182.87	705.3500 ± .37245
q(au)	0.9454 ± .0001	2.6024 ± 1.1386−6
i (deg)	140.1738 ± .0008	58.2241 ± 8.7863−6
node (deg)	104.4586 ± .0006	80.5690 ± 6.748−6
Arg. of perihelion (deg)	171.5825 ± .0103	33.1919 ± 2.0025−5
Time of perihelion passage (TDB)	1908-Dec.-26.2480 ± .0063	2018-May-09 ± 9.1186−5

Notes. Solution Date 2021 May 3 at 17:43:16 for C/1908 R1 (Ref: JPL 7) and 2019 April 15 at 23:33:57 for C/2016 R2 (Ref: JPL 43). The uncertainty is given within 1σ. Provided by the SBD.

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