Perturbed Orbital Elements SLA_PERTEL
CALL sla_PERTEL (JFORM, DATE0, DATE1,
EPOCH0, ORBI0, ANODE0, PERIH0, AORQ0, E0, AM0,
EPOCH1, ORBI1, ANODE1, PERIH1, AORQ1, E1, AM1,
JSTAT)
JFORM | I | choice of element set (2 or 3; Note 1) |
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DATE0 | D | date of osculation (TT MJD) for the given |
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| elements |
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DATE1 | D | date of osculation (TT MJD) for the updated |
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| elements |
EPOCH0 | D | epoch of the given element set ( or , TT MJD; |
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| Note 2) |
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ORBI0 | D | inclination (, radians) |
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ANODE0 | D | longitude of the ascending node (, radians) |
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PERIH0 | D | argument of perihelion (, radians) |
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AORQ0 | D | mean distance or perihelion distance ( or , AU) |
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E0 | D | eccentricity () |
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AM0 | D | mean anomaly (, radians, JFORM=2 only) |
EPOCH1 | D | epoch of the updated element set ( or , |
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| TT MJD; Note 2) |
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ORBI1 | D | inclination (, radians) |
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ANODE1 | D | longitude of the ascending node (, radians) |
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PERIH1 | D | argument of perihelion (, radians) |
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AORQ1 | D | mean distance or perihelion distance ( or , AU) |
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E1 | D | eccentricity () |
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AM1 | D | mean anomaly (, radians, JFORM=2 only) |
JSTAT | I | status: |
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| +102 = warning, distant epoch |
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| +101 = warning, large timespan ( years) |
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| +1 to +10 = coincident with major planet (Note 6) |
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| 0 = OK |
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| 1 = illegal JFORM |
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| 2 = illegal E0 |
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| 3 = illegal AORQ0 |
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| 4 = internal error |
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| 5 = numerical error |
JFORM=2, suitable for minor planets:
EPOCH | = | epoch of elements (TT MJD) | |
ORBINC | = | inclination (radians) | |
ANODE | = | longitude of the ascending node (radians) | |
PERIH | = | argument of perihelion (radians) | |
AORQ | = | mean distance (AU) | |
E | = | eccentricity | |
AORL | = | mean anomaly (radians) |
JFORM=3, suitable for comets:
EPOCH | = | epoch of perihelion (TT MJD) | |
ORBINC | = | inclination (radians) | |
ANODE | = | longitude of the ascending node (radians) | |
PERIH | = | argument of perihelion (radians) | |
AORQ | = | perihelion distance (AU) | |
E | = | eccentricity |