| Parameter |
Value |
| Designation |
C/1932 M1 (Newman) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1932-09-24T13:18:01.739520Z |
| Orbit solution date (soln_date, UTC) |
2023-12-04T20:32:28Z |
| Obs used |
67 |
| NEO |
- |
| M1 |
11.100 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1932-08-08.0000000 |
| e |
1.00049326 |
| q (au) |
1.647388 |
| a (au) |
-3339.781255 |
| i (deg) |
78.388473 |
| Ω (om, deg) |
246.089739 |
| ω (w, deg) |
69.788496 |
| M (ma, deg) |
-0.000243 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.370 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.370 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.573 |
| k |
0.800 |
| δ90 |
10.000 |
| 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) |
| 2026-07-29 00:00 |
05:41:37.58 |
-30:33:45.4 |
HIP 26815 |
6.69 |
| 2026-07-29 12:00 |
05:41:38.48 |
-30:33:53.3 |
HIP 26815 |
6.55 |
| 2026-07-30 00:00 |
05:41:39.37 |
-30:34:01.3 |
HIP 26815 |
6.42 |
| 2026-07-30 12:00 |
05:41:40.26 |
-30:34:09.4 |
HIP 26815 |
6.30 |
| 2026-07-31 00:00 |
05:41:41.14 |
-30:34:17.6 |
HIP 26815 |
6.18 |
| 2026-07-31 12:00 |
05:41:42.01 |
-30:34:25.9 |
HIP 26815 |
6.06 |
| 2026-08-01 00:00 |
05:41:42.88 |
-30:34:34.3 |
HIP 26815 |
5.95 |
| 2026-08-01 12:00 |
05:41:43.74 |
-30:34:42.7 |
HIP 26815 |
5.85 |
| 2026-08-02 00:00 |
05:41:44.60 |
-30:34:51.2 |
HIP 26815 |
5.75 |
| 2026-08-02 12:00 |
05:41:45.44 |
-30:34:59.8 |
HIP 26815 |
5.66 |
| 2026-08-03 00:00 |
05:41:46.29 |
-30:35:08.4 |
HIP 26815 |
5.57 |
| 2026-08-03 12:00 |
05:41:47.12 |
-30:35:17.2 |
HIP 26815 |
5.50 |
| 2026-08-04 00:00 |
05:41:47.95 |
-30:35:26.0 |
HIP 26815 |
5.42 |
| 2026-08-04 12:00 |
05:41:48.77 |
-30:35:34.8 |
HIP 26815 |
5.36 |
| 2026-08-05 00:00 |
05:41:49.58 |
-30:35:43.8 |
HIP 26815 |
5.30 |
| 2026-08-05 12:00 |
05:41:50.39 |
-30:35:52.8 |
HIP 26815 |
5.25 |
| 2026-08-06 00:00 |
05:41:51.19 |
-30:36:01.9 |
HIP 26815 |
5.21 |
| 2026-08-06 12:00 |
05:41:51.98 |
-30:36:11.1 |
HIP 26815 |
5.18 |
| 2026-08-07 00:00 |
05:41:52.76 |
-30:36:20.4 |
HIP 26815 |
5.15 |
| 2026-08-07 12:00 |
05:41:53.54 |
-30:36:29.7 |
HIP 26815 |
5.14 |
| 2026-08-08 00:00 |
05:41:54.31 |
-30:36:39.1 |
HIP 26815 |
5.13 |
| 2026-08-08 12:00 |
05:41:55.07 |
-30:36:48.5 |
HIP 26815 |
5.13 |
| 2026-08-09 00:00 |
05:41:55.83 |
-30:36:58.1 |
HIP 26815 |
5.13 |
| 2026-08-09 12:00 |
05:41:56.57 |
-30:37:07.7 |
HIP 26815 |
5.15 |
| 2026-08-10 00:00 |
05:41:57.31 |
-30:37:17.3 |
HIP 26815 |
5.17 |
| 2026-08-10 12:00 |
05:41:58.05 |
-30:37:27.1 |
HIP 26815 |
5.20 |
| 2026-08-11 00:00 |
05:41:58.77 |
-30:37:36.9 |
HIP 26815 |
5.24 |
| 2026-08-11 12:00 |
05:41:59.49 |
-30:37:46.8 |
HIP 26815 |
5.28 |
| 2026-08-12 00:00 |
05:42:00.20 |
-30:37:56.7 |
HIP 26815 |
5.34 |
| 2026-08-12 12:00 |
05:42:00.90 |
-30:38:06.7 |
HIP 26815 |
5.40 |
| 2026-08-13 00:00 |
05:42:01.59 |
-30:38:16.8 |
HIP 26815 |
5.46 |
| 2026-08-13 12:00 |
05:42:02.27 |
-30:38:26.9 |
HIP 26815 |
5.54 |
| 2026-08-14 00:00 |
05:42:02.95 |
-30:38:37.1 |
HIP 26815 |
5.61 |
| 2026-08-14 12:00 |
05:42:03.62 |
-30:38:47.4 |
HIP 26815 |
5.70 |
| 2026-08-15 00:00 |
05:42:04.28 |
-30:38:57.7 |
HIP 26815 |
5.79 |
| 2026-08-15 12:00 |
05:42:04.93 |
-30:39:08.1 |
HIP 26815 |
5.88 |
| 2026-08-16 00:00 |
05:42:05.57 |
-30:39:18.5 |
HIP 26815 |
5.98 |
| 2026-08-16 12:00 |
05:42:06.21 |
-30:39:29.0 |
HIP 26815 |
6.09 |
| 2026-08-17 00:00 |
05:42:06.83 |
-30:39:39.6 |
HIP 26815 |
6.19 |
| 2026-08-17 12:00 |
05:42:07.45 |
-30:39:50.2 |
HIP 26815 |
6.31 |
| 2026-08-18 00:00 |
05:42:08.06 |
-30:40:00.9 |
HIP 26815 |
6.42 |
| 2026-08-18 12:00 |
05:42:08.66 |
-30:40:11.6 |
HIP 26815 |
6.54 |
| 2026-08-19 00:00 |
05:42:09.26 |
-30:40:22.4 |
HIP 26815 |
6.67 |