C/1937 N1 (Finsler)
| Parameter |
Value |
| Designation |
C/1937 N1 (Finsler) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1937-08-15T15:55:13.992960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:05Z |
| Obs used |
25 |
| NEO |
- |
| M1 |
6.300 |
| K1 |
13.250 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1937-07-27.0000000 |
| e |
1.00037846 |
| q (au) |
0.862748 |
| a (au) |
-2279.646632 |
| i (deg) |
146.413356 |
| Ω (om, deg) |
59.419869 |
| ω (w, deg) |
114.832464 |
| M (ma, deg) |
-0.000178 |
Magnitude
Scatter + Global Linear
$$
M_a = (5.747 + 2.504\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
5.747 |
| n |
2.504 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.000 |
| Parameter |
Symbol |
Range |
Description |
| Absolute magnitude at 1 AU from Sun and Earth |
H0 |
-5 to 20 |
Intrinsic brightness of the comet |
| Photometric slope parameter |
n |
2 to 6 |
Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor |
gf |
0.8 to 1 |
Degree of forward scattering |
| Backward scattering asymmetry factor |
gb |
-1 to -0.5 |
Degree of backward scattering |
| Partitioning coefficient |
k |
0.8 to 1 |
Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio |
δ90 |
1 to 10 |
Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
08:22:24.58 |
-14:16:02.4 |
HIP 40896 |
24.67 |
| 2026-02-03 12:00 |
08:22:23.50 |
-14:15:57.6 |
HIP 40896 |
24.43 |
| 2026-02-04 00:00 |
08:22:22.41 |
-14:15:52.7 |
HIP 40896 |
24.20 |
| 2026-02-04 12:00 |
08:22:21.33 |
-14:15:47.8 |
HIP 40896 |
23.96 |
| 2026-02-05 00:00 |
08:22:20.25 |
-14:15:42.7 |
HIP 40896 |
23.73 |
| 2026-02-05 12:00 |
08:22:19.17 |
-14:15:37.7 |
HIP 40896 |
23.50 |
| 2026-02-06 00:00 |
08:22:18.10 |
-14:15:32.5 |
HIP 40896 |
23.27 |
| 2026-02-06 12:00 |
08:22:17.02 |
-14:15:27.3 |
HIP 40896 |
23.05 |
| 2026-02-07 00:00 |
08:22:15.95 |
-14:15:22.0 |
HIP 40896 |
22.82 |
| 2026-02-07 12:00 |
08:22:14.88 |
-14:15:16.6 |
HIP 40896 |
22.60 |
| 2026-02-08 00:00 |
08:22:13.82 |
-14:15:11.2 |
HIP 40896 |
22.38 |
| 2026-02-08 12:00 |
08:22:12.75 |
-14:15:05.7 |
HIP 40896 |
22.16 |
| 2026-02-09 00:00 |
08:22:11.69 |
-14:15:00.1 |
HIP 40896 |
21.94 |
| 2026-02-09 12:00 |
08:22:10.63 |
-14:14:54.5 |
HIP 40896 |
21.73 |
| 2026-02-10 00:00 |
08:22:09.58 |
-14:14:48.8 |
HIP 40896 |
21.52 |
| 2026-02-10 12:00 |
08:22:08.52 |
-14:14:43.0 |
HIP 40896 |
21.31 |
| 2026-02-11 00:00 |
08:22:07.47 |
-14:14:37.1 |
HIP 40896 |
21.10 |
| 2026-02-11 12:00 |
08:22:06.43 |
-14:14:31.2 |
HIP 40896 |
20.90 |
| 2026-02-12 00:00 |
08:22:05.38 |
-14:14:25.3 |
HIP 40896 |
20.70 |
| 2026-02-12 12:00 |
08:22:04.34 |
-14:14:19.2 |
HIP 40896 |
20.50 |
| 2026-02-13 00:00 |
08:22:03.30 |
-14:14:13.1 |
HIP 40896 |
20.30 |
| 2026-02-13 12:00 |
08:22:02.27 |
-14:14:06.9 |
HIP 40896 |
20.11 |
| 2026-02-14 00:00 |
08:22:01.24 |
-14:14:00.7 |
HIP 40896 |
19.92 |
| 2026-02-14 12:00 |
08:22:00.21 |
-14:13:54.4 |
HIP 40896 |
19.73 |
| 2026-02-15 00:00 |
08:21:59.19 |
-14:13:48.1 |
HIP 40896 |
19.55 |
| 2026-02-15 12:00 |
08:21:58.17 |
-14:13:41.6 |
HIP 40896 |
19.37 |
| 2026-02-16 00:00 |
08:21:57.15 |
-14:13:35.2 |
HIP 40896 |
19.19 |
| 2026-02-16 12:00 |
08:21:56.14 |
-14:13:28.6 |
HIP 40896 |
19.02 |
| 2026-02-17 00:00 |
08:21:55.13 |
-14:13:22.0 |
HIP 40896 |
18.85 |
| 2026-02-17 12:00 |
08:21:54.13 |
-14:13:15.3 |
HIP 40896 |
18.68 |
| 2026-02-18 00:00 |
08:21:53.13 |
-14:13:08.6 |
HIP 40896 |
18.52 |
| 2026-02-18 12:00 |
08:21:52.14 |
-14:13:01.8 |
HIP 40896 |
18.36 |
| 2026-02-19 00:00 |
08:21:51.15 |
-14:12:55.0 |
HIP 40896 |
18.20 |
| 2026-02-19 12:00 |
08:21:50.16 |
-14:12:48.1 |
HIP 40896 |
18.05 |
| 2026-02-20 00:00 |
08:21:49.18 |
-14:12:41.1 |
HIP 40896 |
17.90 |
| 2026-02-20 12:00 |
08:21:48.20 |
-14:12:34.1 |
HIP 40896 |
17.76 |
| 2026-02-21 00:00 |
08:21:47.23 |
-14:12:27.0 |
HIP 40896 |
17.62 |
| 2026-02-21 12:00 |
08:21:46.26 |
-14:12:19.9 |
HIP 40896 |
17.49 |
| 2026-02-22 00:00 |
08:21:45.29 |
-14:12:12.7 |
HIP 40896 |
17.36 |
| 2026-02-22 12:00 |
08:21:44.34 |
-14:12:05.5 |
HIP 40896 |
17.23 |
| 2026-02-23 00:00 |
08:21:43.38 |
-14:11:58.2 |
HIP 40896 |
17.11 |
| 2026-02-23 12:00 |
08:21:42.43 |
-14:11:50.9 |
HIP 40896 |
16.99 |
| 2026-02-24 00:00 |
08:21:41.49 |
-14:11:43.5 |
HIP 40896 |
16.88 |