P/2010 D2 (WISE)
| Parameter |
Value |
| Designation |
P/2010 D2 (WISE) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-03-05T03:52:32.606400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:40Z |
| Obs used |
66 |
| NEO |
- |
| M1 |
14.400 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-09-01.0000000 |
| e |
0.45302440 |
| q (au) |
3.659054 |
| a (au) |
6.689610 |
| i (deg) |
57.176974 |
| Ω (om, deg) |
319.835860 |
| ω (w, deg) |
120.068180 |
| M (ma, deg) |
10.244377 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.079 + 2.282\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.079 |
| n |
2.282 |
| gf |
0.888 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
4.185 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
22:04:30.15 |
+22:59:02.1 |
HIP 109004 |
21.84 |
| 2026-02-03 12:00 |
22:04:54.60 |
+23:02:08.5 |
HIP 109004 |
23.95 |
| 2026-02-04 00:00 |
22:05:19.10 |
+23:05:16.3 |
HIP 109004 |
27.46 |
| 2026-02-04 12:00 |
22:05:43.66 |
+23:08:25.7 |
HIP 109004 |
31.93 |
| 2026-02-05 00:00 |
22:06:08.27 |
+23:11:36.4 |
HIP 109004 |
37.03 |
| 2026-02-05 12:00 |
22:06:32.93 |
+23:14:48.7 |
HIP 109348 |
39.15 |
| 2026-02-06 00:00 |
22:06:57.65 |
+23:18:02.3 |
HIP 109348 |
35.65 |
| 2026-02-06 12:00 |
22:07:22.43 |
+23:21:17.5 |
HIP 109348 |
33.10 |
| 2026-02-07 00:00 |
22:07:47.25 |
+23:24:34.1 |
HIP 109348 |
31.73 |
| 2026-02-07 12:00 |
22:08:12.13 |
+23:27:52.1 |
HIP 109348 |
31.72 |
| 2026-02-08 00:00 |
22:08:37.06 |
+23:31:11.6 |
HIP 109414 |
30.68 |
| 2026-02-08 12:00 |
22:09:02.04 |
+23:34:32.5 |
HIP 109414 |
30.32 |
| 2026-02-09 00:00 |
22:09:27.06 |
+23:37:54.9 |
HIP 109414 |
31.42 |
| 2026-02-09 12:00 |
22:09:52.14 |
+23:41:18.7 |
HIP 109414 |
33.84 |
| 2026-02-10 00:00 |
22:10:17.27 |
+23:44:44.0 |
HIP 109627 |
29.61 |
| 2026-02-10 12:00 |
22:10:42.44 |
+23:48:10.7 |
HIP 109627 |
23.98 |
| 2026-02-11 00:00 |
22:11:07.66 |
+23:51:38.8 |
HIP 109627 |
19.06 |
| 2026-02-11 12:00 |
22:11:32.93 |
+23:55:08.4 |
HIP 109627 |
15.59 |
| 2026-02-12 00:00 |
22:11:58.24 |
+23:58:39.4 |
HIP 109627 |
14.64 |
| 2026-02-12 12:00 |
22:12:23.60 |
+24:02:11.9 |
HIP 109719 |
14.30 |
| 2026-02-13 00:00 |
22:12:49.00 |
+24:05:45.8 |
HIP 109719 |
9.45 |
| 2026-02-13 12:00 |
22:13:14.44 |
+24:09:21.1 |
HIP 109719 |
8.21 |
| 2026-02-14 00:00 |
22:13:39.93 |
+24:12:57.9 |
HIP 109719 |
11.80 |
| 2026-02-14 12:00 |
22:14:05.46 |
+24:16:36.1 |
HIP 109842 |
9.96 |
| 2026-02-15 00:00 |
22:14:31.03 |
+24:20:15.7 |
HIP 109842 |
4.10 |
| 2026-02-15 12:00 |
22:14:56.64 |
+24:23:56.8 |
HIP 109842 |
5.42 |
| 2026-02-16 00:00 |
22:15:22.29 |
+24:27:39.2 |
HIP 109949 |
10.97 |
| 2026-02-16 12:00 |
22:15:47.98 |
+24:31:23.1 |
HIP 109949 |
4.19 |
| 2026-02-17 00:00 |
22:16:13.71 |
+24:35:08.4 |
HIP 109949 |
3.34 |
| 2026-02-17 12:00 |
22:16:39.47 |
+24:38:55.1 |
HIP 109949 |
10.09 |
| 2026-02-18 00:00 |
22:17:05.27 |
+24:42:43.3 |
HIP 110041 |
6.85 |
| 2026-02-18 12:00 |
22:17:31.11 |
+24:46:32.8 |
HIP 110041 |
3.28 |
| 2026-02-19 00:00 |
22:17:56.98 |
+24:50:23.8 |
HIP 110041 |
8.54 |
| 2026-02-19 12:00 |
22:18:22.89 |
+24:54:16.1 |
HIP 110137 |
6.36 |
| 2026-02-20 00:00 |
22:18:48.83 |
+24:58:09.9 |
HIP 110137 |
3.64 |
| 2026-02-20 12:00 |
22:19:14.80 |
+25:02:05.0 |
HIP 110137 |
9.26 |
| 2026-02-21 00:00 |
22:19:40.81 |
+25:06:01.6 |
HIP 110137 |
16.08 |
| 2026-02-21 12:00 |
22:20:06.84 |
+25:09:59.5 |
HIP 110326 |
15.23 |
| 2026-02-22 00:00 |
22:20:32.91 |
+25:13:58.8 |
HIP 110367 |
15.92 |
| 2026-02-22 12:00 |
22:20:59.00 |
+25:17:59.5 |
HIP 110367 |
9.49 |
| 2026-02-23 00:00 |
22:21:25.13 |
+25:22:01.6 |
HIP 110367 |
5.30 |
| 2026-02-23 12:00 |
22:21:51.28 |
+25:26:05.1 |
HIP 110367 |
8.26 |
| 2026-02-24 00:00 |
22:22:17.46 |
+25:30:09.9 |
HIP 110367 |
14.54 |