C/1914 M1

Solar System
Dynamics &
Planetology
Group

C/1914 M1 Neujmin

General description

Comet C/1914 M1 was discovered on 24 June 1914, about one month before perihelion passage, and was last seen on 10 August 1915 [Kronk, Cometography: Volume 3].

This comet made its closest approach to Earth on 25 June 1914 (2.75 au), that is the next day after its discovery.

Solution given below is based on data span over 1.13 yr in a range of heliocentric distances from 3.76 au through perihelion (3.75 au) to 4.06 au.

Comet suffered a very slight planetary perturbations during its passage through the planetary system.

More details in Królikowska et al. 2014, Królikowska and Dybczyński 2017

Figure caption: Time distribution of positional observations with corresponding heliocentric (red curve) and geocentric (green curve) distance at which they were taken. The horizontal dotted line shows the perihelion distance for a given comet whereas vertical dotted line — the moment of perihelion passage.

SSDP Cometary Note C1914M1A1-001

Comet C/1914 M1 Neujmin

number of observations	70
number of residuals	122
data interval	1914 June 24 — 1915 Aug. 10
rms [arcsec]	2.21
orbit quality class	1b

Osculating orbital elements (heliocentric; ecliptic J2000.0)

Epoch (TT)	19140816.0	= JD 2420360.5
time of perihelion passage (TT)	19140730.491036	± 0.010771
perihelion distance	3.74680509	± 0.00006838
eccentricity	1.00325348	± 0.00009295
argument of perihelion [deg]	14.000020	± 0.002102
longitude of the ascending node [deg]	271.513791	± 0.000168
inclination [deg]	71.041017	± 0.000427
inverse semimajor axis [10^-6 au^-1]	-868.34	± 24.78

Note: Epoch is given in a format: yyyymmdd.d, time of perihelion passage in a format of yyyymmdd.dddddd.

Figure caption: Six 2D-projections of the 6D space of original swarm (5001 VCs) of C/1914 M1. Each density map is given in logarithmic scale presented on the right in the individual panel.
The same figure in the new window

Original orbital elements (barycentric; at 250 au from the Sun)

Epoch (TT)	16110225
time of perihelion passage (TT)	19140730.529118	± 0.010704
perihelion distance	3.74227102	± 0.00006815
eccentricity	0.99986307	± 0.00009345
argument of perihelion [deg]	14.115408	± 0.002096
longitude of the ascending node [deg]	271.473680	± 0.000169
inclination [deg]	71.078722	± 0.000424
inverse semimajor axis [10^-6 au^-1]	36.59	± 24.97

Note: Values of uncertainties of original/future orbital elements were derived using a swarm of 5001 osculating orbits of VCs (including the nominal osculating orbit given above) for original/future orbital evolution calclulations and then by fitting the distribution of a given orbital element of original/future swarm of VCs to Gaussian distribution.

Original barycentric positions and velocities of 5001 VCs at 250 au from the Sun are given here (data format), i.e. before entering the planetary zone.

Figure caption: Six 2D-projections of the 6D space of future swarm (5001 VCs) of C/1914 M1. Each density map is given in logarithmic scale presented on the right in the individual panel.
The same figure in the new window

Future orbital elements (barycentric; at 250 au from the Sun)

Epoch (TT)	22170827
time of perihelion passage (TT)	19140730.313104	± 0.010831
perihelion distance	3.74262397	± 0.00006879
eccentricity	0.99996809	± 0.00009357
argument of perihelion [deg]	13.874513	± 0.002108
longitude of the ascending node [deg]	271.460496	± 0.000169
inclination [deg]	71.079539	± 0.000423
inverse semimajor axis [10^-6 au^-1]	8.53	± 25.00