453P/WISE-Lemmon
| Parameter |
Value |
| Designation |
453P/WISE-Lemmon |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-03-02T23:53:38.328000Z |
| Orbit solution date (soln_date, UTC) |
2023-08-06T18:13:35Z |
| Obs used |
324 |
| NEO |
- |
| M1 |
11.400 |
| K1 |
16.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-11-01T07:57:29.203200Z |
| Discovery magnitude (MPC) |
19.39 G |
| Discovery observatory (MPC) |
G96 · Mt. Lemmon Survey |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2022-10-12.0000000 |
| e |
0.58243939 |
| q (au) |
2.278541 |
| a (au) |
5.456791 |
| i (deg) |
27.067709 |
| Ω (om, deg) |
42.897454 |
| ω (w, deg) |
70.816364 |
| M (ma, deg) |
349.020743 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.183 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.183 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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) |
| 2026-02-03 00:00 |
17:13:04.30 |
-36:29:08.9 |
HIP 84370 |
22.48 |
| 2026-02-03 12:00 |
17:13:20.96 |
-36:30:38.5 |
HIP 84370 |
19.35 |
| 2026-02-04 00:00 |
17:13:37.51 |
-36:32:08.2 |
HIP 84370 |
16.46 |
| 2026-02-04 12:00 |
17:13:53.95 |
-36:33:38.0 |
HIP 84370 |
13.96 |
| 2026-02-05 00:00 |
17:14:10.27 |
-36:35:08.0 |
HIP 84370 |
12.07 |
| 2026-02-05 12:00 |
17:14:26.48 |
-36:36:38.1 |
HIP 84370 |
11.07 |
| 2026-02-06 00:00 |
17:14:42.58 |
-36:38:08.3 |
HIP 84370 |
11.21 |
| 2026-02-06 12:00 |
17:14:58.55 |
-36:39:38.7 |
HIP 84370 |
12.41 |
| 2026-02-07 00:00 |
17:15:14.41 |
-36:41:09.2 |
HIP 84370 |
14.41 |
| 2026-02-07 12:00 |
17:15:30.15 |
-36:42:39.9 |
HIP 84370 |
16.90 |
| 2026-02-08 00:00 |
17:15:45.77 |
-36:44:10.7 |
HIP 84370 |
19.69 |
| 2026-02-08 12:00 |
17:16:01.27 |
-36:45:41.6 |
HIP 84370 |
22.66 |
| 2026-02-09 00:00 |
17:16:16.64 |
-36:47:12.6 |
HIP 84370 |
25.73 |
| 2026-02-09 12:00 |
17:16:31.90 |
-36:48:43.8 |
HIP 84370 |
28.88 |
| 2026-02-10 00:00 |
17:16:47.02 |
-36:50:15.1 |
HIP 84370 |
32.06 |
| 2026-02-10 12:00 |
17:17:02.03 |
-36:51:46.6 |
HIP 84749 |
31.99 |
| 2026-02-11 00:00 |
17:17:16.91 |
-36:53:18.2 |
HIP 84749 |
28.65 |
| 2026-02-11 12:00 |
17:17:31.66 |
-36:54:49.9 |
HIP 84749 |
25.33 |
| 2026-02-12 00:00 |
17:17:46.28 |
-36:56:21.8 |
HIP 84749 |
22.03 |
| 2026-02-12 12:00 |
17:18:00.78 |
-36:57:53.8 |
HIP 84749 |
18.75 |
| 2026-02-13 00:00 |
17:18:15.14 |
-36:59:25.9 |
HIP 84749 |
15.50 |
| 2026-02-13 12:00 |
17:18:29.37 |
-37:00:58.2 |
HIP 84749 |
12.27 |
| 2026-02-14 00:00 |
17:18:43.48 |
-37:02:30.6 |
HIP 84749 |
9.07 |
| 2026-02-14 12:00 |
17:18:57.44 |
-37:04:03.2 |
HIP 84749 |
5.90 |
| 2026-02-15 00:00 |
17:19:11.28 |
-37:05:35.8 |
HIP 84749 |
2.80 |
| 2026-02-15 12:00 |
17:19:24.98 |
-37:07:08.7 |
HIP 84749 |
0.92 |
| 2026-02-16 00:00 |
17:19:38.54 |
-37:08:41.6 |
HIP 84749 |
3.66 |
| 2026-02-16 12:00 |
17:19:51.96 |
-37:10:14.7 |
HIP 84749 |
6.72 |
| 2026-02-17 00:00 |
17:20:05.25 |
-37:11:47.9 |
HIP 84749 |
9.77 |
| 2026-02-17 12:00 |
17:20:18.40 |
-37:13:21.3 |
HIP 84749 |
12.81 |
| 2026-02-18 00:00 |
17:20:31.41 |
-37:14:54.8 |
HIP 84749 |
15.83 |
| 2026-02-18 12:00 |
17:20:44.27 |
-37:16:28.4 |
HIP 84749 |
18.83 |
| 2026-02-19 00:00 |
17:20:57.00 |
-37:18:02.2 |
HIP 84749 |
21.80 |
| 2026-02-19 12:00 |
17:21:09.58 |
-37:19:36.1 |
HIP 85048 |
21.86 |
| 2026-02-20 00:00 |
17:21:22.02 |
-37:21:10.1 |
HIP 85048 |
20.07 |
| 2026-02-20 12:00 |
17:21:34.31 |
-37:22:44.3 |
HIP 85048 |
18.60 |
| 2026-02-21 00:00 |
17:21:46.46 |
-37:24:18.6 |
HIP 85048 |
17.52 |
| 2026-02-21 12:00 |
17:21:58.46 |
-37:25:53.0 |
HIP 85036 |
16.52 |
| 2026-02-22 00:00 |
17:22:10.31 |
-37:27:27.5 |
HIP 85036 |
13.91 |
| 2026-02-22 12:00 |
17:22:22.02 |
-37:29:02.2 |
HIP 85036 |
11.42 |
| 2026-02-23 00:00 |
17:22:33.57 |
-37:30:37.0 |
HIP 85036 |
9.12 |
| 2026-02-23 12:00 |
17:22:44.98 |
-37:32:11.9 |
HIP 85036 |
7.17 |
| 2026-02-24 00:00 |
17:22:56.23 |
-37:33:46.9 |
HIP 85036 |
5.89 |