| Parameter |
Value |
| Designation |
C/2010 E3 (WISE) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-04-05T12:06:39.401280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
33 |
| NEO |
- |
| M1 |
13.400 |
| K1 |
14.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-03-07.0000000 |
| e |
0.99221691 |
| q (au) |
2.269055 |
| a (au) |
291.536458 |
| i (deg) |
96.357814 |
| Ω (om, deg) |
117.272465 |
| ω (w, deg) |
50.432753 |
| M (ma, deg) |
359.994158 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.034 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.034 |
| n |
6.000 |
| gf |
0.903 |
| gb |
-0.835 |
| k |
0.998 |
| δ90 |
4.136 |
| 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) |
| 2026-06-01 00:00 |
20:13:47.52 |
-41:49:31.2 |
HIP 99656 |
6.87 |
| 2026-06-01 12:00 |
20:13:44.61 |
-41:49:57.1 |
HIP 99656 |
6.89 |
| 2026-06-02 00:00 |
20:13:41.67 |
-41:50:22.8 |
HIP 99656 |
6.98 |
| 2026-06-02 12:00 |
20:13:38.70 |
-41:50:48.6 |
HIP 99656 |
7.14 |
| 2026-06-03 00:00 |
20:13:35.69 |
-41:51:14.3 |
HIP 99656 |
7.35 |
| 2026-06-03 12:00 |
20:13:32.66 |
-41:51:40.0 |
HIP 99656 |
7.62 |
| 2026-06-04 00:00 |
20:13:29.60 |
-41:52:05.6 |
HIP 99656 |
7.95 |
| 2026-06-04 12:00 |
20:13:26.50 |
-41:52:31.2 |
HIP 99656 |
8.32 |
| 2026-06-05 00:00 |
20:13:23.37 |
-41:52:56.7 |
HIP 99656 |
8.74 |
| 2026-06-05 12:00 |
20:13:20.22 |
-41:53:22.2 |
HIP 99656 |
9.19 |
| 2026-06-06 00:00 |
20:13:17.03 |
-41:53:47.7 |
HIP 99656 |
9.68 |
| 2026-06-06 12:00 |
20:13:13.81 |
-41:54:13.1 |
HIP 99656 |
10.19 |
| 2026-06-07 00:00 |
20:13:10.57 |
-41:54:38.4 |
HIP 99656 |
10.74 |
| 2026-06-07 12:00 |
20:13:07.29 |
-41:55:03.7 |
HIP 99656 |
11.30 |
| 2026-06-08 00:00 |
20:13:03.98 |
-41:55:28.9 |
HIP 99656 |
11.89 |
| 2026-06-08 12:00 |
20:13:00.65 |
-41:55:54.1 |
HIP 99656 |
12.49 |
| 2026-06-09 00:00 |
20:12:57.29 |
-41:56:19.2 |
HIP 99656 |
13.11 |
| 2026-06-09 12:00 |
20:12:53.89 |
-41:56:44.3 |
HIP 99656 |
13.74 |
| 2026-06-10 00:00 |
20:12:50.47 |
-41:57:09.3 |
HIP 99656 |
14.39 |
| 2026-06-10 12:00 |
20:12:47.02 |
-41:57:34.2 |
HIP 99656 |
15.05 |
| 2026-06-11 00:00 |
20:12:43.55 |
-41:57:59.0 |
HIP 99656 |
15.72 |
| 2026-06-11 12:00 |
20:12:40.04 |
-41:58:23.8 |
HIP 99656 |
16.40 |
| 2026-06-12 00:00 |
20:12:36.51 |
-41:58:48.5 |
HIP 99656 |
17.09 |
| 2026-06-12 12:00 |
20:12:32.95 |
-41:59:13.2 |
HIP 99656 |
17.79 |
| 2026-06-13 00:00 |
20:12:29.36 |
-41:59:37.7 |
HIP 99656 |
18.49 |
| 2026-06-13 12:00 |
20:12:25.75 |
-42:00:02.2 |
HIP 99656 |
19.21 |
| 2026-06-14 00:00 |
20:12:22.11 |
-42:00:26.6 |
HIP 99656 |
19.93 |
| 2026-06-14 12:00 |
20:12:18.44 |
-42:00:51.0 |
HIP 99656 |
20.66 |
| 2026-06-15 00:00 |
20:12:14.75 |
-42:01:15.2 |
HIP 99656 |
21.39 |
| 2026-06-15 12:00 |
20:12:11.03 |
-42:01:39.4 |
HIP 99656 |
22.13 |
| 2026-06-16 00:00 |
20:12:07.29 |
-42:02:03.4 |
HIP 99656 |
22.88 |
| 2026-06-16 12:00 |
20:12:03.52 |
-42:02:27.4 |
HIP 99656 |
23.63 |
| 2026-06-17 00:00 |
20:11:59.73 |
-42:02:51.3 |
HIP 99656 |
24.39 |
| 2026-06-17 12:00 |
20:11:55.91 |
-42:03:15.1 |
HIP 99354 |
25.03 |
| 2026-06-18 00:00 |
20:11:52.07 |
-42:03:38.8 |
HIP 99354 |
24.62 |
| 2026-06-18 12:00 |
20:11:48.21 |
-42:04:02.4 |
HIP 99354 |
24.22 |
| 2026-06-19 00:00 |
20:11:44.32 |
-42:04:26.0 |
HIP 99354 |
23.84 |
| 2026-06-19 12:00 |
20:11:40.41 |
-42:04:49.4 |
HIP 99354 |
23.48 |
| 2026-06-20 00:00 |
20:11:36.48 |
-42:05:12.7 |
HIP 99354 |
23.14 |
| 2026-06-20 12:00 |
20:11:32.52 |
-42:05:35.9 |
HIP 99354 |
22.81 |
| 2026-06-21 00:00 |
20:11:28.55 |
-42:05:59.0 |
HIP 99354 |
22.52 |
| 2026-06-21 12:00 |
20:11:24.55 |
-42:06:22.0 |
HIP 99354 |
22.24 |
| 2026-06-22 00:00 |
20:11:20.53 |
-42:06:44.9 |
HIP 99354 |
21.99 |