schema_version = 1
dataset_id = "vsop87"
dataset_kind = "planetary-theory"
source = "Bretagnon, P. and Francou, G. (1988). VSOP87 (IMCCE)"
generator = "siderust/import-vsop87"
generator_version = "pending"
generated_at = "2026-05-28T00:00:00Z"
time_scale = "TDB-compatible JD"
frame = "EclipticMeanJ2000"
center = "Sun (A), Solar-System-Barycenter (E)"
units = "AU, day"
valid_from_jd = 625296.5
valid_to_jd = 2816787.5
dynamical_model = "VSOP87 versions A (heliocentric rectangular) and E (barycentric rectangular)"
notes = """
Raw upstream files (`VSOP87A.ear`, `VSOP87E.ear`, …) are not yet committed.
Once added under `raw/`, populate the `[[files]]` array and run the validator
to record SHA-256 digests.
"""
[[references]]
citation = "Bretagnon, P., Francou, G. (1988). Planetary theories in rectangular and spherical variables. VSOP87 solutions. Astronomy & Astrophysics 202, 309-315."
url = "https://ftp.imcce.fr/pub/ephem/planets/vsop87/"