(110) Lydia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	14 Jun 2025	12.5	2.537 AU	2.021 AU	22h34m	-16°48'	108.8°	22.3°
Opposition	21 Aug 2025	11.1	2.519 AU	1.517 AU	22h21m	-20°54'	170.0°	4.0°

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 Lydia are:

            e (Eccentricity)                : 0.0792773
            a (Semimajor axis)              : 2.7332330
            i (Inclination)                 : 5.95939
            Ω (Longitude of ascending node) : 56.76763
            ω (Argument of perihelion)      : 282.23394
            M (Mean anomaly)                : 327.84122
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : -20.93397
            B (Latitude of perihelion)      : -5.82358
            P (Orbital period in years)     : 4.52            
        

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-06-14 00:00 UT   22 34 01.5   -16 48 47     2.021    2.537  108.8   22.3   251   12.5 
2025-06-14 14:56 UT   22 34 25.1   -16 48 34     2.013    2.537  109.3   22.2   251   12.4 
2025-06-15 00:00 UT   22 34 39.1   -16 48 28     2.009    2.537  109.6   22.2   251   12.4 
2025-06-16 00:00 UT   22 35 15.5   -16 48 16     1.997    2.537  110.4   22.0   251   12.4 
2025-06-17 00:00 UT   22 35 50.6   -16 48 13     1.985    2.536  111.3   21.9   251   12.4 
2025-06-18 00:00 UT   22 36 24.3   -16 48 18     1.973    2.536  112.1   21.8   251   12.4 
2025-06-19 00:00 UT   22 36 56.8   -16 48 31     1.961    2.536  112.9   21.7   251   12.4 
2025-06-20 00:00 UT   22 37 27.9   -16 48 53     1.950    2.535  113.7   21.5   251   12.4 
2025-06-21 00:00 UT   22 37 57.6   -16 49 23     1.938    2.535  114.6   21.4   251   12.3 
2025-06-22 00:00 UT   22 38 26.0   -16 50 01     1.927    2.535  115.4   21.2   252   12.3 
2025-06-23 00:00 UT   22 38 53.0   -16 50 48     1.915    2.534  116.2   21.1   252   12.3 
2025-06-24 00:00 UT   22 39 18.6   -16 51 44     1.904    2.534  117.1   20.9   252   12.3 
2025-06-25 00:00 UT   22 39 42.8   -16 52 48     1.893    2.533  118.0   20.8   252   12.3 
2025-06-26 00:00 UT   22 40 05.5   -16 54 01     1.881    2.533  118.8   20.6   252   12.2 
2025-06-27 00:00 UT   22 40 26.8   -16 55 23     1.870    2.533  119.7   20.4   252   12.2 
2025-06-28 00:00 UT   22 40 46.6   -16 56 53     1.860    2.532  120.6   20.2   253   12.2 
2025-06-29 00:00 UT   22 41 04.9   -16 58 32     1.849    2.532  121.4   20.0   253   12.2 
2025-06-30 00:00 UT   22 41 21.7   -17 00 20     1.838    2.532  122.3   19.8   253   12.2 
2025-07-01 00:00 UT   22 41 37.0   -17 02 16     1.827    2.531  123.2   19.6   253   12.2 
2025-07-02 00:00 UT   22 41 50.9   -17 04 21     1.817    2.531  124.1   19.4   253   12.1 
2025-07-03 00:00 UT   22 42 03.2   -17 06 35     1.807    2.531  125.0   19.2   254   12.1 
2025-07-04 00:00 UT   22 42 13.9   -17 08 57     1.796    2.531  125.9   19.0   254   12.1 
2025-07-05 00:00 UT   22 42 23.2   -17 11 28     1.786    2.530  126.8   18.8   254   12.1 
2025-07-06 00:00 UT   22 42 30.8   -17 14 07     1.776    2.530  127.8   18.5   254   12.1 
2025-07-07 00:00 UT   22 42 36.9   -17 16 54     1.766    2.530  128.7   18.3   255   12.0 
2025-07-08 00:00 UT   22 42 41.5   -17 19 50     1.757    2.529  129.6   18.0   255   12.0 
2025-07-09 00:00 UT   22 42 44.4   -17 22 54     1.747    2.529  130.6   17.8   255   12.0 
2025-07-10 00:00 UT   22 42 45.8   -17 26 07     1.738    2.529  131.5   17.5   255   12.0 
2025-07-11 00:00 UT   22 42 45.6   -17 29 27     1.729    2.528  132.4   17.3   256   12.0 
2025-07-12 00:00 UT   22 42 43.8   -17 32 55     1.719    2.528  133.4   17.0   256   11.9 
2025-07-13 00:00 UT   22 42 40.4   -17 36 31     1.710    2.528  134.4   16.7   256   11.9 
2025-07-14 00:00 UT   22 42 35.3   -17 40 15     1.702    2.528  135.3   16.4   257   11.9 

    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.