2001 YD1
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	19 Apr 2026	27.6	2.176 AU	1.304 AU	11h44m	+14°19'	140.6°	17.0°

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
2026-04-19 00:00 UT   11 44 19.2   +14 19 01     1.304    2.176  140.6   17.0   128   27.6 
2026-04-19 13:19 UT   11 43 45.6   +14 19 42     1.309    2.176  140.0   17.3   128   27.6 
2026-04-20 00:00 UT   11 43 19.1   +14 20 10     1.313    2.176  139.5   17.5   128   27.6 
2026-04-21 00:00 UT   11 42 21.2   +14 21 01     1.321    2.177  138.3   17.9   127   27.6 
2026-04-22 00:00 UT   11 41 25.6   +14 21 34     1.330    2.177  137.2   18.3   126   27.7 
2026-04-23 00:00 UT   11 40 32.2   +14 21 49     1.339    2.178  136.1   18.7   126   27.7 
2026-04-24 00:00 UT   11 39 41.1   +14 21 46     1.348    2.178  135.0   19.1   125   27.7 
2026-04-25 00:00 UT   11 38 52.3   +14 21 27     1.357    2.178  133.9   19.4   125   27.7 
2026-04-26 00:00 UT   11 38 05.8   +14 20 51     1.366    2.179  132.8   19.8   124   27.8 
2026-04-27 00:00 UT   11 37 21.6   +14 19 58     1.376    2.179  131.7   20.2   124   27.8 
2026-04-28 00:00 UT   11 36 39.7   +14 18 50     1.385    2.179  130.7   20.5   123   27.8 
2026-04-29 00:00 UT   11 36 00.1   +14 17 26     1.395    2.179  129.6   20.9   123   27.8 
2026-04-30 00:00 UT   11 35 22.8   +14 15 47     1.405    2.180  128.5   21.2   122   27.9 
2026-05-01 00:00 UT   11 34 47.7   +14 13 53     1.415    2.180  127.5   21.5   122   27.9 
2026-05-02 00:00 UT   11 34 14.9   +14 11 44     1.425    2.180  126.5   21.8   122   27.9 
2026-05-03 00:00 UT   11 33 44.4   +14 09 21     1.435    2.180  125.4   22.1   121   27.9 
2026-05-04 00:00 UT   11 33 16.0   +14 06 45     1.446    2.180  124.4   22.4   121   28.0 
2026-05-05 00:00 UT   11 32 49.9   +14 03 54     1.456    2.180  123.4   22.7   120   28.0 
2026-05-06 00:00 UT   11 32 26.0   +14 00 51     1.467    2.180  122.4   23.0   120   28.0 
2026-05-07 00:00 UT   11 32 04.3   +13 57 35     1.478    2.180  121.4   23.3   120   28.0 
2026-05-08 00:00 UT   11 31 44.7   +13 54 06     1.488    2.180  120.4   23.5   120   28.1 
2026-05-09 00:00 UT   11 31 27.3   +13 50 24     1.499    2.180  119.4   23.8   119   28.1 
2026-05-10 00:00 UT   11 31 12.0   +13 46 31     1.510    2.180  118.5   24.0   119   28.1 
2026-05-11 00:00 UT   11 30 58.8   +13 42 26     1.521    2.180  117.5   24.3   119   28.1 
2026-05-12 00:00 UT   11 30 47.6   +13 38 10     1.533    2.180  116.5   24.5   118   28.2 
2026-05-13 00:00 UT   11 30 38.5   +13 33 42     1.544    2.180  115.6   24.7   118   28.2 
2026-05-14 00:00 UT   11 30 31.5   +13 29 03     1.555    2.180  114.7   24.9   118   28.2 
2026-05-15 00:00 UT   11 30 26.4   +13 24 14     1.567    2.179  113.7   25.1   118   28.2 
2026-05-16 00:00 UT   11 30 23.3   +13 19 14     1.578    2.179  112.8   25.3   117   28.2 
2026-05-17 00:00 UT   11 30 22.2   +13 14 04     1.590    2.179  111.9   25.5   117   28.3 
2026-05-18 00:00 UT   11 30 23.0   +13 08 44     1.601    2.179  111.0   25.7   117   28.3 
2026-05-19 00:00 UT   11 30 25.6   +13 03 15     1.613    2.178  110.1   25.9   117   28.3 

    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.