2001 YD1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	24 May 2026	28.4	2.176 AU	1.672 AU	11h31m	+12°33'	105.7°	26.6°

The interactive orbit chart above shows the body's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)

The orbital elements of 2001 YD1 are:

            e (Eccentricity)                : 0.4647925
            a (Semimajor axis)              : 1.4885039
            i (Inclination)                 : 7.04712
            Ω (Longitude of ascending node) : 85.69290
            ω (Argument of perihelion)      : 285.47897
            M (Mean anomaly)                : 89.47045
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 11.28398
            B (Latitude of perihelion)      : -6.79028
            P (Orbital period in years)     : 1.82            
        

The light curve chart below shows the estimated development of the minor planet's magnitude.

The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.

The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-05-24 00:00 UT   11 31 06.4   +12 33 31     1.672    2.176  105.7   26.6   116   28.4 
2026-05-24 16:29 UT   11 31 15.5   +12 29 09     1.680    2.176  105.1   26.7   116   28.4 
2026-05-25 00:00 UT   11 31 19.8   +12 27 09     1.683    2.176  104.8   26.7   116   28.4 
2026-05-26 00:00 UT   11 31 34.9   +12 20 39     1.695    2.175  104.0   26.9   116   28.4 
2026-05-27 00:00 UT   11 31 51.7   +12 14 01     1.707    2.174  103.2   27.0   116   28.5 
2026-05-28 00:00 UT   11 32 10.0   +12 07 15     1.719    2.174  102.3   27.1   115   28.5 
2026-05-29 00:00 UT   11 32 29.9   +12 00 22     1.731    2.173  101.5   27.2   115   28.5 
2026-05-30 00:00 UT   11 32 51.4   +11 53 23     1.743    2.173  100.7   27.3   115   28.5 
2026-05-31 00:00 UT   11 33 14.4   +11 46 16     1.755    2.172   99.9   27.4   115   28.5 
2026-06-01 00:00 UT   11 33 38.9   +11 39 02     1.767    2.171   99.1   27.5   115   28.5 
2026-06-02 00:00 UT   11 34 04.9   +11 31 42     1.779    2.170   98.3   27.5   115   28.6 
2026-06-03 00:00 UT   11 34 32.3   +11 24 15     1.791    2.170   97.5   27.6   115   28.6 
2026-06-04 00:00 UT   11 35 01.1   +11 16 42     1.803    2.169   96.7   27.7   114   28.6 
2026-06-05 00:00 UT   11 35 31.3   +11 09 02     1.815    2.168   95.9   27.7   114   28.6 
2026-06-06 00:00 UT   11 36 02.9   +11 01 17     1.827    2.167   95.1   27.8   114   28.6 
2026-06-07 00:00 UT   11 36 35.8   +10 53 25     1.839    2.166   94.3   27.8   114   28.6 
2026-06-08 00:00 UT   11 37 10.1   +10 45 28     1.851    2.165   93.6   27.9   114   28.7 
2026-06-09 00:00 UT   11 37 45.6   +10 37 25     1.862    2.164   92.8   27.9   114   28.7 
2026-06-10 00:00 UT   11 38 22.4   +10 29 16     1.874    2.163   92.1   28.0   114   28.7 
2026-06-11 00:00 UT   11 39 00.4   +10 21 02     1.886    2.162   91.3   28.0   114   28.7 
2026-06-12 00:00 UT   11 39 39.7   +10 12 42     1.898    2.161   90.6   28.0   114   28.7 
2026-06-13 00:00 UT   11 40 20.2   +10 04 17     1.910    2.160   89.8   28.0   114   28.7 
2026-06-14 00:00 UT   11 41 01.9   +09 55 47     1.922    2.159   89.1   28.1   113   28.7 
2026-06-15 00:00 UT   11 41 44.8   +09 47 12     1.933    2.158   88.4   28.1   113   28.7 
2026-06-16 00:00 UT   11 42 28.8   +09 38 32     1.945    2.157   87.6   28.1   113   28.8 
2026-06-17 00:00 UT   11 43 13.9   +09 29 46     1.957    2.156   86.9   28.1   113   28.8 
2026-06-18 00:00 UT   11 44 00.1   +09 20 56     1.969    2.155   86.2   28.1   113   28.8 
2026-06-19 00:00 UT   11 44 47.4   +09 12 02     1.980    2.153   85.5   28.1   113   28.8 
2026-06-20 00:00 UT   11 45 35.8   +09 03 03     1.992    2.152   84.8   28.0   113   28.8 
2026-06-21 00:00 UT   11 46 25.2   +08 53 59     2.003    2.151   84.1   28.0   113   28.8 
2026-06-22 00:00 UT   11 47 15.7   +08 44 51     2.015    2.149   83.4   28.0   113   28.8 
2026-06-23 00:00 UT   11 48 07.1   +08 35 39     2.026    2.148   82.7   28.0   113   28.8 

    Terminology:
            
    delta:  distance between minor planet and earth in AU
    radius: distance between minor planet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-minor planet)    
    phase:  phase angle in degrees (angle sun-minor planet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    

Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.