395P/Catalina-NEAT
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Perihelion	19 Feb 2022	17.8	4.246 AU	5.223 AU	21h39m	-11°01'	7.8°	1.8°	272°
Nearest approach	6 Sep 2022	17.0	4.375 AU	3.373 AU	23h14m	-00°52'	173.1°	1.6°	215°
Today	20 Nov 2025	20.7	7.373 AU	6.463 AU	05h26m	+20°42'	155.4°	3.2°	272°

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 8.0 + 5 log[∆] + 10.0 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 395P/Catalina-NEAT are:

    e (Eccentricity)                : 0.4105510
    q (Perihelion distance)         : 4.2460160
    i (Inclination)                 : 3.56700
    Ω (Longitude of ascending node) : 220.93870
    ω (Argument of perihelion)      : 100.78720
    L (Longitude of perihelion)     : 141.74635
    B (Latitude of perihelion)      : 3.50389
    T (Time of perihelion passage)  : 2459630.13680
    P (Orbital period in years)     : 19.33

    Epoch                           : 2025 Nov 19
    Reference                       : MPC182892

    Classification(s):              : Ecliptic; Jupiter family
    Tisserand (Jupiter)             : 2.864

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-11-19 00:00 UT   05 26 29.5   +20 42 47     6.468    7.371  154.3    3.3   272   20.7 
2025-11-20 00:00 UT   05 26 06.2   +20 42 10     6.463    7.373  155.4    3.2   272   20.7 
2025-11-20 00:24 UT   05 26 05.8   +20 42 09     6.463    7.373  155.4    3.2   272   20.7 
2025-11-21 00:00 UT   05 25 42.5   +20 41 32     6.459    7.376  156.5    3.1   272   20.7 
2025-11-22 00:00 UT   05 25 18.6   +20 40 55     6.456    7.378  157.6    2.9   273   20.7 
2025-11-23 00:00 UT   05 24 54.4   +20 40 18     6.452    7.381  158.7    2.8   273   20.7 
2025-11-24 00:00 UT   05 24 29.9   +20 39 40     6.449    7.384  159.8    2.7   273   20.7 
2025-11-25 00:00 UT   05 24 05.1   +20 39 02     6.446    7.386  160.9    2.5   274   20.7 
2025-11-26 00:00 UT   05 23 40.1   +20 38 25     6.444    7.389  162.0    2.4   274   20.7 
2025-11-27 00:00 UT   05 23 14.9   +20 37 47     6.442    7.391  163.0    2.2   275   20.7 
2025-11-28 00:00 UT   05 22 49.5   +20 37 10     6.440    7.394  164.1    2.1   275   20.7 
2025-11-29 00:00 UT   05 22 23.8   +20 36 32     6.438    7.396  165.2    1.9   276   20.7 
2025-11-30 00:00 UT   05 21 58.0   +20 35 54     6.437    7.399  166.3    1.8   277   20.7 

    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.