| Parameter |
Value |
| Designation |
C/1957 U1 (Latyshev-Wild-Burnham) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1957-12-05T03:06:11.520000Z |
| Orbit solution date (soln_date, UTC) |
- |
| Obs used |
9 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1957-12-05.1293000 |
| e |
1.00000000 |
| q (au) |
0.539130 |
| a (au) |
- |
| i (deg) |
156.715400 |
| Ω (om, deg) |
210.875300 |
| ω (w, deg) |
277.613800 |
| M (ma, deg) |
- |
Magnitude
Scatter + Global Linear
$$
M_a = (11.780 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.780 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.525 |
| 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) |
| 2026-03-26 00:00 |
08:42:19.89 |
+42:27:44.6 |
HIP 42596 |
15.98 |
| 2026-03-26 12:00 |
08:42:18.95 |
+42:27:40.7 |
HIP 42596 |
15.80 |
| 2026-03-27 00:00 |
08:42:18.01 |
+42:27:36.6 |
HIP 42596 |
15.62 |
| 2026-03-27 12:00 |
08:42:17.09 |
+42:27:32.5 |
HIP 42596 |
15.44 |
| 2026-03-28 00:00 |
08:42:16.18 |
+42:27:28.4 |
HIP 42596 |
15.27 |
| 2026-03-28 12:00 |
08:42:15.29 |
+42:27:24.1 |
HIP 42596 |
15.09 |
| 2026-03-29 00:00 |
08:42:14.40 |
+42:27:19.8 |
HIP 42596 |
14.92 |
| 2026-03-29 12:00 |
08:42:13.53 |
+42:27:15.5 |
HIP 42596 |
14.76 |
| 2026-03-30 00:00 |
08:42:12.68 |
+42:27:11.0 |
HIP 42596 |
14.59 |
| 2026-03-30 12:00 |
08:42:11.83 |
+42:27:06.5 |
HIP 42596 |
14.43 |
| 2026-03-31 00:00 |
08:42:11.00 |
+42:27:02.0 |
HIP 42596 |
14.27 |
| 2026-03-31 12:00 |
08:42:10.18 |
+42:26:57.3 |
HIP 42596 |
14.11 |
| 2026-04-01 00:00 |
08:42:09.37 |
+42:26:52.6 |
HIP 42596 |
13.96 |
| 2026-04-01 12:00 |
08:42:08.58 |
+42:26:47.9 |
HIP 42596 |
13.80 |
| 2026-04-02 00:00 |
08:42:07.79 |
+42:26:43.0 |
HIP 42596 |
13.65 |
| 2026-04-02 12:00 |
08:42:07.03 |
+42:26:38.2 |
HIP 42596 |
13.51 |
| 2026-04-03 00:00 |
08:42:06.27 |
+42:26:33.2 |
HIP 42596 |
13.36 |
| 2026-04-03 12:00 |
08:42:05.53 |
+42:26:28.2 |
HIP 42596 |
13.22 |
| 2026-04-04 00:00 |
08:42:04.80 |
+42:26:23.1 |
HIP 42596 |
13.08 |
| 2026-04-04 12:00 |
08:42:04.08 |
+42:26:18.0 |
HIP 42596 |
12.95 |
| 2026-04-05 00:00 |
08:42:03.38 |
+42:26:12.8 |
HIP 42596 |
12.81 |
| 2026-04-05 12:00 |
08:42:02.69 |
+42:26:07.5 |
HIP 42596 |
12.68 |
| 2026-04-06 00:00 |
08:42:02.01 |
+42:26:02.2 |
HIP 42596 |
12.56 |
| 2026-04-06 12:00 |
08:42:01.35 |
+42:25:56.8 |
HIP 42596 |
12.43 |
| 2026-04-07 00:00 |
08:42:00.70 |
+42:25:51.4 |
HIP 42596 |
12.31 |
| 2026-04-07 12:00 |
08:42:00.07 |
+42:25:45.9 |
HIP 42596 |
12.19 |
| 2026-04-08 00:00 |
08:41:59.44 |
+42:25:40.3 |
HIP 42596 |
12.08 |
| 2026-04-08 12:00 |
08:41:58.83 |
+42:25:34.7 |
HIP 42596 |
11.97 |
| 2026-04-09 00:00 |
08:41:58.24 |
+42:25:29.0 |
HIP 42596 |
11.86 |
| 2026-04-09 12:00 |
08:41:57.65 |
+42:25:23.3 |
HIP 42596 |
11.75 |
| 2026-04-10 00:00 |
08:41:57.09 |
+42:25:17.5 |
HIP 42596 |
11.65 |
| 2026-04-10 12:00 |
08:41:56.53 |
+42:25:11.6 |
HIP 42596 |
11.55 |
| 2026-04-11 00:00 |
08:41:55.99 |
+42:25:05.7 |
HIP 42596 |
11.46 |
| 2026-04-11 12:00 |
08:41:55.46 |
+42:24:59.8 |
HIP 42596 |
11.36 |
| 2026-04-12 00:00 |
08:41:54.95 |
+42:24:53.8 |
HIP 42596 |
11.28 |
| 2026-04-12 12:00 |
08:41:54.45 |
+42:24:47.7 |
HIP 42596 |
11.19 |
| 2026-04-13 00:00 |
08:41:53.96 |
+42:24:41.6 |
HIP 42596 |
11.11 |
| 2026-04-13 12:00 |
08:41:53.49 |
+42:24:35.4 |
HIP 42596 |
11.04 |
| 2026-04-14 00:00 |
08:41:53.03 |
+42:24:29.2 |
HIP 42596 |
10.96 |
| 2026-04-14 12:00 |
08:41:52.58 |
+42:24:22.9 |
HIP 42596 |
10.89 |
| 2026-04-15 00:00 |
08:41:52.15 |
+42:24:16.5 |
HIP 42596 |
10.83 |
| 2026-04-15 12:00 |
08:41:51.74 |
+42:24:10.2 |
HIP 42596 |
10.77 |
| 2026-04-16 00:00 |
08:41:51.33 |
+42:24:03.7 |
HIP 42596 |
10.71 |