| Parameter |
Value |
| Designation |
506P/WISE-LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-08-25T06:38:14.740800Z |
| Orbit solution date (soln_date, UTC) |
2025-09-15T15:02:52Z |
| Obs used |
291 |
| NEO |
- |
| M1 |
8.600 |
| K1 |
19.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2010-05-20T12:52:33.600000Z |
| Discovery magnitude (MPC) |
- |
| Discovery observatory (MPC) |
C51 · WISE |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2019-09-03.0000000 |
| e |
0.48210120 |
| q (au) |
2.888384 |
| a (au) |
5.577120 |
| i (deg) |
13.650119 |
| Ω (om, deg) |
325.837750 |
| ω (w, deg) |
353.601887 |
| M (ma, deg) |
251.322812 |
Magnitude
Scatter + Global Linear
$$
M_a = (9.543 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
9.543 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.997 |
| 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) |
| 2026-09-20 00:00 |
07:07:54.50 |
+32:44:09.6 |
HIP 34311 |
13.92 |
| 2026-09-20 12:00 |
07:08:06.63 |
+32:44:21.3 |
HIP 34311 |
16.38 |
| 2026-09-21 00:00 |
07:08:18.62 |
+32:44:33.3 |
HIP 34311 |
18.83 |
| 2026-09-21 12:00 |
07:08:30.46 |
+32:44:45.7 |
HIP 34311 |
21.27 |
| 2026-09-22 00:00 |
07:08:42.16 |
+32:44:58.3 |
HIP 34311 |
23.69 |
| 2026-09-22 12:00 |
07:08:53.71 |
+32:45:11.3 |
HIP 34663 |
24.42 |
| 2026-09-23 00:00 |
07:09:05.12 |
+32:45:24.6 |
HIP 34663 |
22.25 |
| 2026-09-23 12:00 |
07:09:16.38 |
+32:45:38.3 |
HIP 34663 |
20.16 |
| 2026-09-24 00:00 |
07:09:27.49 |
+32:45:52.2 |
HIP 34663 |
18.18 |
| 2026-09-24 12:00 |
07:09:38.45 |
+32:46:06.5 |
HIP 34663 |
16.33 |
| 2026-09-25 00:00 |
07:09:49.26 |
+32:46:21.1 |
HIP 34663 |
14.63 |
| 2026-09-25 12:00 |
07:09:59.92 |
+32:46:36.0 |
HIP 34663 |
13.15 |
| 2026-09-26 00:00 |
07:10:10.42 |
+32:46:51.3 |
HIP 34663 |
11.93 |
| 2026-09-26 12:00 |
07:10:20.78 |
+32:47:06.9 |
HIP 34663 |
11.05 |
| 2026-09-27 00:00 |
07:10:30.99 |
+32:47:22.8 |
HIP 34663 |
10.58 |
| 2026-09-27 12:00 |
07:10:41.04 |
+32:47:39.1 |
HIP 34663 |
10.54 |
| 2026-09-28 00:00 |
07:10:50.94 |
+32:47:55.7 |
HIP 34663 |
10.92 |
| 2026-09-28 12:00 |
07:11:00.68 |
+32:48:12.6 |
HIP 34663 |
11.68 |
| 2026-09-29 00:00 |
07:11:10.26 |
+32:48:29.9 |
HIP 34700 |
11.64 |
| 2026-09-29 12:00 |
07:11:19.70 |
+32:48:47.5 |
HIP 34700 |
11.93 |
| 2026-09-30 00:00 |
07:11:28.97 |
+32:49:05.4 |
HIP 34700 |
12.55 |
| 2026-09-30 12:00 |
07:11:38.08 |
+32:49:23.7 |
HIP 34700 |
13.42 |
| 2026-10-01 00:00 |
07:11:47.04 |
+32:49:42.3 |
HIP 34700 |
14.49 |
| 2026-10-01 12:00 |
07:11:55.84 |
+32:50:01.2 |
HIP 34700 |
15.70 |
| 2026-10-02 00:00 |
07:12:04.47 |
+32:50:20.5 |
HIP 34700 |
17.02 |
| 2026-10-02 12:00 |
07:12:12.95 |
+32:50:40.1 |
HIP 34700 |
18.41 |
| 2026-10-03 00:00 |
07:12:21.26 |
+32:51:00.1 |
HIP 34700 |
19.85 |
| 2026-10-03 12:00 |
07:12:29.41 |
+32:51:20.4 |
HIP 34714 |
21.23 |
| 2026-10-04 00:00 |
07:12:37.40 |
+32:51:41.0 |
HIP 34714 |
22.19 |
| 2026-10-04 12:00 |
07:12:45.22 |
+32:52:02.0 |
HIP 34977 |
21.73 |
| 2026-10-05 00:00 |
07:12:52.88 |
+32:52:23.3 |
HIP 34977 |
20.57 |
| 2026-10-05 12:00 |
07:13:00.37 |
+32:52:45.0 |
HIP 34977 |
19.52 |
| 2026-10-06 00:00 |
07:13:07.69 |
+32:53:07.0 |
HIP 34977 |
18.58 |
| 2026-10-06 12:00 |
07:13:14.84 |
+32:53:29.3 |
HIP 34977 |
17.76 |
| 2026-10-07 00:00 |
07:13:21.83 |
+32:53:52.0 |
HIP 34977 |
17.06 |
| 2026-10-07 12:00 |
07:13:28.65 |
+32:54:15.0 |
HIP 34977 |
16.51 |
| 2026-10-08 00:00 |
07:13:35.29 |
+32:54:38.4 |
HIP 34977 |
16.09 |
| 2026-10-08 12:00 |
07:13:41.77 |
+32:55:02.1 |
HIP 34977 |
15.82 |
| 2026-10-09 00:00 |
07:13:48.07 |
+32:55:26.1 |
HIP 34977 |
15.68 |
| 2026-10-09 12:00 |
07:13:54.20 |
+32:55:50.5 |
HIP 34977 |
15.69 |
| 2026-10-10 00:00 |
07:14:00.16 |
+32:56:15.2 |
HIP 34977 |
15.82 |
| 2026-10-10 12:00 |
07:14:05.94 |
+32:56:40.3 |
HIP 34977 |
16.07 |
| 2026-10-11 00:00 |
07:14:11.55 |
+32:57:05.6 |
HIP 34977 |
16.42 |