Russell-Ocampo cycler 2.5.1.+0 (short-transit 2-synodic)

russell-ocampo-2.5.1+0 · source: literature · validation: V0

Signature

Bodies: E-M
Sequence (canonical): E-E-M-M
Sense: outbound
Period: 4.270 yr (2 × E-M synodic)
Priority date: 2003-02-09

V∞ at encounters

E (#1): 7.80 km/s
Russell 2004 Table 3.4: high-V_inf 'short-transit' variant of a 2-synodic cycler.
M (#2): 9.90 km/s
Russell 2004 Table 3.4.

Orbit elements (heliocentric)

Semi-major axis a: — AU
Eccentricity e: —
Perihelion: — AU
Aphelion: 2.189 AU
Inclination: 0.00°

Legs

E → M: 94 d, 0 revs
Russell 2004 §3.8: 'Cycler 2.5.1.+0 is an example of a solution with a relatively short Earth-Mars transit time, perhaps desirable for a human-crewed mission. The benefits of the 94-day trip are offset by the relatively high terminal speeds.'

Primary citation

Russell, R. P. & Ocampo, C. A. (2005). Geometric Analysis of Free-Return Trajectories Following a Gravity-Assisted Flyby. JSR Vol. 42 No. 1 pp. 138-151.

DOI: 10.2514/1.5571

URL: https://arc.aiaa.org/doi/abs/10.2514/1.5571

Notes

Included to span the V_inf range of the Russell-Ocampo catalogue: while 4.3.1.-5 is the low-energy extreme, 2.5.1.+0 is a typical high-V_inf short-transit cycler. The full Russell 2004 Table 3.4 (44 cyclers, 24 ballistic) is summarised in docs/known-cyclers.md §3.4.

Source quotes (per-field provenance)

Every numerical value in this entry traces to a verbatim or paraphrased quote from a cited source.

vinf_kms_at_encounters[0].vinf_kms: Russell 2004 Table 3.4 row 2.5.1.+0.
vinf_kms_at_encounters[1].vinf_kms: Russell 2004 Table 3.4 row 2.5.1.+0.
legs[0].tof_days: Russell 2004 §3.8: '94-day trip'.
aphelion_au: Russell 2004 Table 3.4 Aphelion Ratio 1.44 x 1.52 = 2.189 AU.