📈 Free Graphic Ephemeris — Your Year of Transits as Lines
Umbriel's free graphic ephemeris draws the next twelve months as lines, with your own natal positions across it — so a transit is a crossing you can see rather than a date you have to look up. Free, in your browser, no account.
- What you'll needBirth date, time and place
- What you getA year of transits drawn as a chart, with every crossing of one of your natal lines marking a hard aspect
- CostFree — no account required
Runs in your browser. Nothing to install, nothing to set up.
What it actually is
A graphic ephemeris puts twelve months along the bottom and planetary position up the side, then folds every position modulo 45° or 360°. The folding is the whole trick.
At 45°, every hard aspect in the series — conjunction, square, opposition, semisquare and sesquiquadrate — collapses onto the same horizontal line. So a transiting planet crossing one of your natal lines is a hard aspect to that point, and a year of contacts becomes something you look at instead of something you read off a table one row at a time. At 360° you get the unfolded year, where sign ingresses are the readable feature instead.
Because the curves are drawn rather than tabulated, the shapes tell you things a list does not: a retrograde appears as the curve doubling back on itself, a station as it flattening out, and a long triple-pass transit as three crossings of the same line instead of one line in a table repeated three times.
Ten natal bodies are drawn as fixed horizontal lines, and the transiting planets run across them. Positions come from the same engine that casts your chart rather than an interpolated table, so a crossing is as precise as the chart is.
The graphic ephemeris lives on Umbriel's transits page, alongside the transit list it is the visual counterpart to.
How Umbriel computes it
Twelve months run along the bottom and every position is folded modulo 45° or 360° up the side, your choice. The folding is the point: at 45° every hard aspect in the series — conjunction, square, opposition, semisquare and sesquiquadrate — collapses onto the same horizontal line, so a transiting planet crossing one of your natal lines *is* a hard aspect to that point, visible as a crossing rather than something you have to look up in a table. Ten natal bodies are drawn as fixed horizontal lines and the transiting planets as curves across the year, so retrograde loops appear as the curve doubling back and a station appears as it flattening. Positions come from the same engine as the natal chart rather than from an interpolated table, which is why the crossings can be trusted to the same precision as a chart.
What's in your result
- Twelve months at onceThe year ahead in one image, rather than a list you scroll.
- 45° or 360°Fold for hard aspects, or unfold for the plain year and its ingresses.
- Your natal lines drawn across itTen natal bodies as fixed lines, so every crossing is a real contact to your chart.
- Retrogrades and stations, visibleA doubling-back curve is a retrograde; a flattening one is a station. The shape is the information.
Common questions
What is a graphic ephemeris?
A chart of planetary positions over time — months along the bottom, position up the side — usually folded modulo 45° so that every hard aspect lands on the same line and shows up as a crossing.
Why 45 degrees?
Because 45° is the common factor of the hard aspects. Conjunction, semisquare, square, sesquiquadrate and opposition are all multiples of it, so folding at 45° puts all of them onto one horizontal line.
What does a crossing mean?
A transiting planet's curve crossing one of your natal lines is a hard aspect to that natal point, on the date the crossing happens.
Do I need a birth time?
For the planetary lines, no. A birth time is needed if you want the angles among your natal lines, since the Ascendant and Midheaven depend on it.
Is the graphic ephemeris free?
Yes — both harmonics, your natal lines and the full year, with no account.
Go deeper
Each of these is a free tool in its own right.
Umbriel offers every system here as a set of prompts to think with, never as a statement of fact about who you are. Take what's useful, leave the rest.