C/2019 O3 (Palomar)
ephemeris date magn radius delta ra dec elong phase PA
Nearest approach23 Jul 202016.58.918 AU8.274 AU 19h24m+32°06'126.7°5.2°166°
Perihelion7 Mar 202116.68.820 AU9.211 AU 19h42m+36°03'63.9°5.8°299°
Today30 Jan 202620.913.288 AU12.674 AU 09h57m+69°54'126.8°3.4°200°
C/2019 O3 (Palomar)- 2026-01-30
astro.vanbuitenen.nl


 
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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.)


Light curve

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations from COBS. This lightcurve is being recalculated every 6 hours based on the available COBS/MPC observations (currently -7.3 + 5 log[∆] + 20.2 log[r]). An additional green curve is displayed when an increase in apparent brightness is expected due to forward scattering of sunlight, which occurs when a dust-rich comet is located between the Earth and the Sun. (See Marcus 2007)



Charts

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.




Orbital elements

The orbital elements of C/2019 O3 (Palomar) are:

    e (Eccentricity)                : 1.0018500
    q (Perihelion distance)         : 8.8201960
    i (Inclination)                 : 89.79100
    Ω (Longitude of ascending node) : 300.48300
    ω (Argument of perihelion)      : 60.07840
    L (Longitude of perihelion)     : 300.84614
    B (Latitude of perihelion)      : 60.07774
    T (Time of perihelion passage)  : 2459281.07140

    Epoch                           : 2026 Jan 29
    Reference                       : MPC182878

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

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-01-29 00:00 UT   09 59 05.5   +69 53 24    12.667   13.283  127.0    3.4   202   20.9 
2026-01-30 00:00 UT   09 58 06.8   +69 54 12    12.673   13.287  126.8    3.4   201   20.9 
2026-01-30 05:55 UT   09 57 52.3   +69 54 24    12.674   13.288  126.8    3.4   200   20.9 
2026-01-31 00:00 UT   09 57 07.9   +69 54 56    12.678   13.291  126.7    3.4   199   20.9 
2026-02-01 00:00 UT   09 56 08.6   +69 55 35    12.684   13.295  126.6    3.4   198   20.9 
2026-02-02 00:00 UT   09 55 09.2   +69 56 08    12.690   13.299  126.4    3.4   196   20.9 
2026-02-03 00:00 UT   09 54 09.5   +69 56 37    12.696   13.302  126.2    3.4   195   20.9 
2026-02-04 00:00 UT   09 53 09.6   +69 57 00    12.703   13.306  126.0    3.4   193   20.9 
2026-02-05 00:00 UT   09 52 09.6   +69 57 18    12.709   13.310  125.8    3.4   192   20.9 
2026-02-06 00:00 UT   09 51 09.5   +69 57 32    12.716   13.314  125.6    3.5   190   20.9 
2026-02-07 00:00 UT   09 50 09.3   +69 57 39    12.723   13.318  125.3    3.5   189   20.9 
2026-02-08 00:00 UT   09 49 09.0   +69 57 42    12.730   13.322  125.1    3.5   187   20.9 
2026-02-09 00:00 UT   09 48 08.7   +69 57 39    12.738   13.326  124.8    3.5   186   20.9 



    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.