| Parameter |
Value |
| Designation |
148P/Anderson-LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-06-13T16:15:58.455360Z |
| Orbit solution date (soln_date, UTC) |
2024-05-15T12:05:54Z |
| Obs used |
250 |
| NEO |
- |
| M1 |
13.000 |
| K1 |
14.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-11-05.0000000 |
| e |
0.53932159 |
| q (au) |
1.694251 |
| a (au) |
3.677730 |
| i (deg) |
3.682208 |
| Ω (om, deg) |
89.790123 |
| ω (w, deg) |
6.596200 |
| M (ma, deg) |
227.148123 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.853 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.853 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.923 |
| 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) |
| 2026-03-26 00:00 |
19:40:38.10 |
-22:18:03.4 |
HIP 96741 |
17.34 |
| 2026-03-26 12:00 |
19:40:51.49 |
-22:17:41.2 |
HIP 96913 |
16.85 |
| 2026-03-27 00:00 |
19:41:04.74 |
-22:17:19.3 |
HIP 96913 |
14.10 |
| 2026-03-27 12:00 |
19:41:17.85 |
-22:16:57.7 |
HIP 96913 |
11.56 |
| 2026-03-28 00:00 |
19:41:30.81 |
-22:16:36.4 |
HIP 96913 |
9.34 |
| 2026-03-28 12:00 |
19:41:43.63 |
-22:16:15.4 |
HIP 96913 |
7.71 |
| 2026-03-29 00:00 |
19:41:56.30 |
-22:15:54.8 |
HIP 96913 |
7.03 |
| 2026-03-29 12:00 |
19:42:08.83 |
-22:15:34.4 |
HIP 96913 |
7.52 |
| 2026-03-30 00:00 |
19:42:21.21 |
-22:15:14.5 |
HIP 96913 |
8.96 |
| 2026-03-30 12:00 |
19:42:33.44 |
-22:14:54.8 |
HIP 96913 |
10.96 |
| 2026-03-31 00:00 |
19:42:45.53 |
-22:14:35.5 |
HIP 96913 |
13.24 |
| 2026-03-31 12:00 |
19:42:57.47 |
-22:14:16.5 |
HIP 96913 |
15.67 |
| 2026-04-01 00:00 |
19:43:09.26 |
-22:13:57.9 |
HIP 96913 |
18.16 |
| 2026-04-01 12:00 |
19:43:20.90 |
-22:13:39.6 |
HIP 96913 |
20.68 |
| 2026-04-02 00:00 |
19:43:32.39 |
-22:13:21.7 |
HIP 96913 |
23.21 |
| 2026-04-02 12:00 |
19:43:43.72 |
-22:13:04.1 |
HIP 96913 |
25.74 |
| 2026-04-03 00:00 |
19:43:54.91 |
-22:12:46.9 |
HIP 96913 |
28.25 |
| 2026-04-03 12:00 |
19:44:05.94 |
-22:12:30.1 |
HIP 97251 |
26.59 |
| 2026-04-04 00:00 |
19:44:16.81 |
-22:12:13.6 |
HIP 97251 |
24.12 |
| 2026-04-04 12:00 |
19:44:27.53 |
-22:11:57.5 |
HIP 97251 |
21.69 |
| 2026-04-05 00:00 |
19:44:38.10 |
-22:11:41.8 |
HIP 97251 |
19.32 |
| 2026-04-05 12:00 |
19:44:48.51 |
-22:11:26.5 |
HIP 97251 |
17.01 |
| 2026-04-06 00:00 |
19:44:58.76 |
-22:11:11.5 |
HIP 97251 |
14.77 |
| 2026-04-06 12:00 |
19:45:08.85 |
-22:10:56.9 |
HIP 97251 |
12.61 |
| 2026-04-07 00:00 |
19:45:18.78 |
-22:10:42.8 |
HIP 97251 |
10.58 |
| 2026-04-07 12:00 |
19:45:28.56 |
-22:10:29.0 |
HIP 97251 |
8.72 |
| 2026-04-08 00:00 |
19:45:38.17 |
-22:10:15.6 |
HIP 97251 |
7.12 |
| 2026-04-08 12:00 |
19:45:47.62 |
-22:10:02.6 |
HIP 97251 |
5.98 |
| 2026-04-09 00:00 |
19:45:56.91 |
-22:09:50.1 |
HIP 97251 |
5.51 |
| 2026-04-09 12:00 |
19:46:06.03 |
-22:09:37.9 |
HIP 97251 |
5.86 |
| 2026-04-10 00:00 |
19:46:14.99 |
-22:09:26.2 |
HIP 97251 |
6.86 |
| 2026-04-10 12:00 |
19:46:23.78 |
-22:09:14.9 |
HIP 97251 |
8.24 |
| 2026-04-11 00:00 |
19:46:32.41 |
-22:09:04.0 |
HIP 97251 |
9.83 |
| 2026-04-11 12:00 |
19:46:40.87 |
-22:08:53.5 |
HIP 97251 |
11.51 |
| 2026-04-12 00:00 |
19:46:49.17 |
-22:08:43.5 |
HIP 97251 |
13.24 |
| 2026-04-12 12:00 |
19:46:57.29 |
-22:08:33.9 |
HIP 97251 |
14.99 |
| 2026-04-13 00:00 |
19:47:05.24 |
-22:08:24.7 |
HIP 97251 |
16.72 |
| 2026-04-13 12:00 |
19:47:13.03 |
-22:08:16.0 |
HIP 97251 |
18.45 |
| 2026-04-14 00:00 |
19:47:20.64 |
-22:08:07.7 |
HIP 97383 |
18.61 |
| 2026-04-14 12:00 |
19:47:28.08 |
-22:08:00.0 |
HIP 97383 |
18.34 |
| 2026-04-15 00:00 |
19:47:35.35 |
-22:07:52.6 |
HIP 97383 |
18.24 |
| 2026-04-15 12:00 |
19:47:42.44 |
-22:07:45.6 |
HIP 97383 |
18.30 |
| 2026-04-16 00:00 |
19:47:49.36 |
-22:07:39.2 |
HIP 97383 |
18.50 |