About: how AstroWhisper calculates your horoscope
AstroWhisper is an independent project: an astrology bot in Telegram in English, Russian and Turkish. It takes planet positions from NASA ephemerides, not from ready-made sun sign tables. Here is what is calculated, where accuracy ends and how to reach us.
Where planet positions come from
The bot calculates the sky from NASA JPL DE440s ephemerides using the open-source Skyfield library. Ephemerides are tables of the motion of the Sun, Moon and planets used for space missions.
The calculation uses your date, time and city of birth. That is why two people with the same sun sign get different charts and different forecasts.
How we checked the calculation
On 13 November 2026 we compared the calculation with the NASA JPL Horizons service on a control chart. The previous built-in calculation was off by about two degrees for Pluto and about nine for Chiron. After the move to NASA ephemerides those differences are gone.
If you see a difference from a chart an astrologer made for you, write to support: most often the cause is the birth time or the house system.
What the AI does
First the bot calculates the chart and builds the text by rules. Then a language model only rephrases the finished calculation in natural language. It does not invent planet positions, dates or conclusions.
The "sign of the day" picture is drawn by an image generation service from a description. These services receive the finished text or the picture description, not your Telegram user ID.
Where the limits are
Chart accuracy depends on birth time: the ascendant moves about one degree every four minutes. If the time is unknown, the bot says so and does not show what cannot be determined without it.
Astrology is a way to reflect on yourself and your decisions. It does not replace a doctor, a lawyer or a financial adviser. The bot does not predict death, illness or court rulings.
What is free and what is paid
About me, the daily and yearly forecast, the sign of the day, compatibility, cities and favourable dates are free. Only the detailed five-year horoscope is paid: 750 Telegram Stars.
How to contact us
Support works inside the bot @AstroWhisperAI: send the /paysupport command and describe your question in one message. The bot owner receives it and the reply arrives in the same chat.
Check the calculation on your own chart
Enter your date, time and city of birth. It is free.
Frequently asked questions
Who makes AstroWhisper?
AstroWhisper is an independent project. The calculation engine was written from scratch and runs on NASA JPL DE440s ephemerides.
Can I trust the calculation?
Planet positions come from the same NASA ephemerides used in astronomy and were checked against JPL Horizons. The interpretation is astrological and is not a scientific forecast.
How do I contact support?
Open the bot @AstroWhisperAI and send the /paysupport command. The reply arrives in the same chat.
Keep reading
Birth chart
Calculate your natal chart from your birth date, time and place and get a plain-language reading.
Read more →Daily horoscope
A personal daily forecast from your natal chart, not your sun sign.
Read more →Compatibility
Compatibility of two natal charts (synastry) plus the cities where a couple would live best.
Read more →