C/2015 VL62 (Lemmon-Yeung-PANSTARRS)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	21 Aug 2017	13.5	2.726 AU	1.745 AU	21h33m	+04°20'	162.2°	6.5°	157°
Perihelion	28 Aug 2017	13.5	2.725 AU	1.766 AU	21h06m	+01°19'	157.2°	8.2°	119°
Today	26 Dec 2024	27.1	18.901 AU	19.025 AU	12h29m	-18°27'	81.2°	2.9°	292°

The interactive orbit chart above shows the comet'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 C/2015 VL62 (Lemmon-Yeung-PANSTARRS) are:

            e (Eccentricity)                : 1.0019130
            q (Perihelion distance)         : 2.7251090
            i (Inclination)                 : 165.82460
            Ω (Longitude of ascending node) : 95.21370
            ω (Argument of perihelion)      : 129.02130
            L (Longitude of perihelion)     : 145.32310
            B (Latitude of perihelion)      : 10.96789
            T (Time of perihelion passage)  : 2457993.75870

            Epoch                           : 2022 Sep 14
            Reference                       : MPC115881

            Classification(s):              : Nearly isotropic; New (a > 10000 AU)
        

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations respectively from COBS or the MPC. The gray curve is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the MPC (8.00 + 5 log[∆] + 10.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 7.89 + 5 log[∆] + 10.00 log[r]).

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

The following chart shows the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.
A more printer-friendly version of the same chart can be found further down this page as well.

The following chart shows the current location of the comet in a smaller, upside-down telescopic field of view.

A printable version of the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2024-12-26 00:00 UT   12 29 29.7   -18 26 50    19.034   18.897   80.5    2.9   292   27.1 
2024-12-26 18:31 UT   12 29 28.9   -18 27 24    19.025   18.901   81.2    2.9   292   27.1 
2024-12-27 00:00 UT   12 29 28.7   -18 27 34    19.023   18.902   81.5    2.9   292   27.1 
2024-12-28 00:00 UT   12 29 27.4   -18 28 17    19.011   18.908   82.5    3.0   292   27.1 
2024-12-29 00:00 UT   12 29 26.0   -18 28 59    18.999   18.913   83.4    3.0   292   27.1 
2024-12-30 00:00 UT   12 29 24.3   -18 29 40    18.987   18.918   84.4    3.0   293   27.1 
2024-12-31 00:00 UT   12 29 22.4   -18 30 19    18.976   18.923   85.4    3.0   293   27.1 
2025-01-01 00:00 UT   12 29 20.2   -18 30 57    18.964   18.928   86.4    3.0   293   27.1 
2025-01-02 00:00 UT   12 29 17.9   -18 31 34    18.952   18.934   87.4    3.0   293   27.1 
2025-01-03 00:00 UT   12 29 15.3   -18 32 09    18.940   18.939   88.4    3.0   294   27.1 
2025-01-04 00:00 UT   12 29 12.5   -18 32 43    18.928   18.944   89.4    3.0   294   27.1 
2025-01-05 00:00 UT   12 29 09.5   -18 33 16    18.916   18.949   90.4    3.0   294   27.1 

    Terminology:
            
    delta:  distance between comet and earth in AU
    radius: distance between comet 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-comet)    
    phase:  phase angle in degrees (angle sun-comet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km      
    

Orbital elements usually provided by the MPC (Minor Planet Center).
Observations contributed by observers worldwide, via COBS (Comet Observation Database) or 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.