Mercury - Perigee and Apogee Calculator

Mercury Perigees and Apogees Calculator
For the 9799-Year Span From 200 AD to 9998 AD
Built Around the NASA/JPL Horizons API
PHP Horizons Interface by Jay Tanner

Year Time Zone UTC

Optional Location Label

View/Copy Source Code

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               ALL MERCURY PERIGEES AND APOGEES FOR THE YEAR 2026
               ==================================================
               Time Zone UTC+00:00
               

               Dates refer to the modern Gregorian calendar.

========================================================================
 EVENT   Julian Date UTC   Calendar Date     Time UTC      Distance AU
------- ----------------- ---------------  -----------  ----------------
Apogee  2461055.468071792 2026-Jan-14-Wed  11:14:01 PM   1.4304028950720
Perigee 2461109.960816868 2026-Mar-10-Tue  11:03:35 AM   0.6181275924029
Apogee  2461173.505773032 2026-May-13-Wed  12:08:19 AM   1.3244852512056
Perigee 2461231.791310448 2026-Jul-10-Fri  06:59:29 AM   0.5686605398231
Apogee  2461286.411845536 2026-Sep-02-Wed  09:53:03 PM   1.3781756067756
Perigee 2461348.065023591 2026-Nov-03-Tue  01:33:38 PM   0.6725549488572
Apogee  2461402.986837998 2026-Dec-28-Mon  11:41:03 AM   1.4439283507312
------- ----------------- ---------------  -----------  ----------------

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NOTES:

[1] This Mercury perigee and apogee calculator spans the 9799 year
    period from 200 AD to 9998 AD.

    It was written in PHP v7.4.9 and makes internal calls to the
    NASA/JPL Horizons API v1.1




[2] Occasionally a time-out may occur if the JPL Horizons server
    is temporarily unavailable or too busy and an error occurs.

    If such a crash or hang-up does occur, simply refresh and try
    again.



[3] UT1 = Old Universal Time Scale - Solar based.
          Old previous UT time scale used for years up to 1961.

    UTC = Coordinated Universal Time Scale - Atomic based.
          Newer UT time scale used from 1962 to date.
          World times are now based on this standard.

    LT  = Local Time for the given time zone based on the
          given +/− HH:MM offset.

          Time Zone Offset Convention:
          West of Greenwich, time zone offsets are negative.
          East of Greenwich, time zone offsets are positive.



[4] Standard times are assumed. To adjust for Daylight Saving or
    Summer Time, add 1 hour to the standard times taking care to
    watch for any change of date -OR- subtract 1 hour from the
    time zone offset, which will automatically handle any date
    change.

    For example, the time zone offset for Eastern Standard Time
   (EST) is normally -5 hours. However, when Eastern Daylight Time
   (EDT) is in effect, use a time zone offset of -4 hours instead.
    The computed times will be in EDT and automatically handle any
    date changes.



[5] There is an optional location label that can be applied to the
    computed table for reference.  However, any label should match
    the indicated time zone so as to be accurate and make sense.

    For example, if using the time zone offset for India, putting
   'New York City, USA' as the location, would be rather absurd
    and an inaccurate match between location name and time zone.

    The label can consist of any printable plain-text string and
    defaults to 'Greenwich, England' at Time Zone Offset +00:00.



[6] This program implements a cookie to store and recall the year
    and other interface settings between calls. It does not track,
    monitor or perform any other activity. If you navigate away
    and come back later, the interface settings stored in the
    cookie will be recalled from your last visit.

    Each call will refresh the cookie for up to 7 days retention
    unless deleted sooner. There is no harm in deleting the cookie.
    The program will simply revert to the original default values.

Program by Jay Tanner
Revised: Sunday - November 23, 2025 at 19:37:41 UTC - PHP v7.4.9