Declination Graph
Plot each body’s declination over any window you choose. The Moon’s 18.6-year envelope, Mercury’s and Venus’s occasional out-of-bounds excursions, and Mars’s fast northern or southern arcs are all visible here in a single view. Pluto’s 2024-2040 OOB phase runs clearly across the top or bottom of a long window.
Window: 2026-01-01 through 2026-12-31. 1,460 samples total.
Save this graph and get alerts when bodies enter or exit bounds
A free account saves your preferred date range and body selection, and notifies you before each of your natal OOB planets is activated by transit.
Why is the Moon’s graph so wavy compared to Venus?
The Moon crosses the ecliptic twice a month. Its declination completes a full oscillation from maximum north to maximum south every 27.3 days (one tropical month). Venus, by comparison, has a near-circular orbit close to the ecliptic plane, so its declination moves slowly and smoothly across months. On a one-year chart the Moon looks like a sine wave and Venus looks like a gentle arc.
The envelope of the Moon’s sine wave itself modulates on an 18.6-year cycle (the nodal cycle). When the lunar nodes align with the equinoxes — most recently during 2024 and 2025 — the Moon reaches its major standstill peaks of about ±28.7°. When the nodes sit at the solstice points (next around 2033) the Moon’s maximum shrinks to its minor standstill amplitude of about ±18.3°.
What does the dashed line mean?
The two dashed horizontal lines mark ±23°26’, which is the mean obliquity of the ecliptic at J2000. Any body whose declination crosses into the shaded bands beyond those lines is out of bounds. Transits through those bands often mark the start or end of a characteristically intense phase associated with the body: bold creative pushes for Mars, unusual romantic or aesthetic judgments for Venus, mental detachment from consensus framings for Mercury.
Pluto’s current out-of-bounds phase (2024-2040)
Pluto passed north of the obliquity threshold on 2024-03-23 and will remain out of bounds through the end of 2040, peaking at +24.8° around September 2031. Plot 2023-2041 with Pluto selected to see the full arc. Historical Pluto OOB windows include 1938-1953 (peaked 1946). These long OOB windows tend to coincide with generational restructurings of political and economic power.
More Free Tools
Declination Calculator
See each planet's declination, flag out-of-bounds bodies beyond the Sun's ±23°26' envelope, and detect parallel and contraparallel aspects.
Out of Bounds Calculator
Find every out-of-bounds planet in your birth chart. OOB planets sit past the Sun's ±23°26' envelope and act like archetypes off-leash.
Lunar Standstill Calculator
Every major (±28.7°) and minor (±18.3°) lunar standstill from 1900 to 2100. See the 18.6-year nodal cycle and where your birth sits within it.
Frequently Asked Questions
What is declination in astrology?
Declination is a body's angular distance north or south of the celestial equator, measured in degrees. Unlike zodiac longitude, it is a physical sky coordinate, so it does not depend on house system, tropical vs sidereal zodiac, or any other framing choice. Every chart has both a longitudinal axis and a declination axis.
What does 'out of bounds' mean?
A planet is out of bounds when its absolute declination exceeds the Sun's own maximum of about 23°26' (the obliquity of the ecliptic at J2000). Moon, Mercury, Venus, Mars, and Pluto can all go OOB; Jupiter, Saturn, Uranus, and Neptune cannot. An OOB body behaves as if it has stepped outside the Sun's envelope and is operating on its own rules.
What is a parallel aspect?
Two planets are parallel when they share the same declination within a 1° orb (north-north or south-south). Parallels behave as declination-axis conjunctions and often show strong affinity even when no zodiacal aspect is present. Traditional sources including Ptolemy, Kepler, and Sepharial treated parallels as important on their own.
What is a contraparallel?
A contraparallel occurs when two planets have equal but opposite declinations (for example +12° and -12°) within a 1° orb. It functions as a declination-axis opposition: the bodies are matched in intensity but poled against each other across the celestial equator.
Why aren't all the planets in the out-of-bounds table?
Jupiter, Saturn, Uranus, and Neptune orbit close to the ecliptic, so they cannot exceed obliquity and never go out of bounds. Pluto is the exception because its orbit is tilted ~17°, which combines with the 23.4° ecliptic tilt to push its declination past 23.4° for roughly one quarter of its 248-year orbit.
Does house system affect declination?
No. Declination is a physical equatorial coordinate. It does not depend on Placidus, Whole Sign, Porphyry, Koch, Campanus, Regiomontanus, or any other house system. This makes declination useful when a birth time is uncertain, because house-dependent signals are the first to degrade under time error and declination is not one of them.
Is a contraparallel the same as an antiscion?
No. A contraparallel matches bodies by declination across the celestial equator. An antiscion matches bodies by ecliptic longitude reflected across the Cancer-Capricorn solstice axis. They often point at the same body pairs but they are computed on different axes and carry slightly different meanings.
How accurate are the declinations on this page?
We compute declinations from NASA's DE440s ephemeris (via the ANISE / JPL toolkit) to arcsecond precision. Out-of-bounds status is flagged at the ±23.4393° J2000 threshold; epoch-of-date obliquity drifts by about 0.013° per century from this value, which is well below the resolution of any traditional OOB claim.