C/1906 B1 (Brooks)
| Parameter |
Value |
| Designation |
C/1906 B1 (Brooks) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1905-12-22T18:51:26.026560Z |
| Orbit solution date (soln_date, UTC) |
2024-02-20T20:16:47Z |
| Obs used |
158 |
| NEO |
- |
| M1 |
7.000 |
| K1 |
16.750 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1906-02-22.0000000 |
| e |
0.99985360 |
| q (au) |
1.296232 |
| a (au) |
8853.993905 |
| i (deg) |
126.442402 |
| Ω (om, deg) |
287.708053 |
| ω (w, deg) |
89.843518 |
| M (ma, deg) |
0.000072 |
Magnitude
Scatter + Global Linear
$$
M_a = (6.312 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
6.312 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
03:28:13.16 |
-35:22:22.4 |
HIP 16112 |
20.20 |
| 2026-02-03 12:00 |
03:28:12.95 |
-35:22:12.2 |
HIP 16112 |
20.34 |
| 2026-02-04 00:00 |
03:28:12.75 |
-35:22:02.0 |
HIP 16112 |
20.48 |
| 2026-02-04 12:00 |
03:28:12.56 |
-35:21:51.7 |
HIP 16112 |
20.62 |
| 2026-02-05 00:00 |
03:28:12.38 |
-35:21:41.4 |
HIP 16112 |
20.77 |
| 2026-02-05 12:00 |
03:28:12.21 |
-35:21:31.1 |
HIP 16112 |
20.91 |
| 2026-02-06 00:00 |
03:28:12.04 |
-35:21:20.8 |
HIP 16112 |
21.06 |
| 2026-02-06 12:00 |
03:28:11.89 |
-35:21:10.4 |
HIP 16112 |
21.21 |
| 2026-02-07 00:00 |
03:28:11.74 |
-35:21:00.0 |
HIP 16112 |
21.36 |
| 2026-02-07 12:00 |
03:28:11.61 |
-35:20:49.5 |
HIP 16112 |
21.51 |
| 2026-02-08 00:00 |
03:28:11.48 |
-35:20:39.1 |
HIP 16112 |
21.67 |
| 2026-02-08 12:00 |
03:28:11.37 |
-35:20:28.6 |
HIP 16112 |
21.82 |
| 2026-02-09 00:00 |
03:28:11.26 |
-35:20:18.1 |
HIP 16112 |
21.98 |
| 2026-02-09 12:00 |
03:28:11.16 |
-35:20:07.5 |
HIP 16112 |
22.13 |
| 2026-02-10 00:00 |
03:28:11.07 |
-35:19:57.0 |
HIP 16112 |
22.29 |
| 2026-02-10 12:00 |
03:28:10.99 |
-35:19:46.4 |
HIP 16112 |
22.45 |
| 2026-02-11 00:00 |
03:28:10.92 |
-35:19:35.8 |
HIP 16112 |
22.61 |
| 2026-02-11 12:00 |
03:28:10.86 |
-35:19:25.2 |
HIP 16112 |
22.78 |
| 2026-02-12 00:00 |
03:28:10.80 |
-35:19:14.5 |
HIP 16112 |
22.94 |
| 2026-02-12 12:00 |
03:28:10.76 |
-35:19:03.9 |
HIP 16112 |
23.11 |
| 2026-02-13 00:00 |
03:28:10.72 |
-35:18:53.2 |
HIP 16112 |
23.27 |
| 2026-02-13 12:00 |
03:28:10.70 |
-35:18:42.5 |
HIP 16112 |
23.44 |
| 2026-02-14 00:00 |
03:28:10.68 |
-35:18:31.8 |
HIP 16112 |
23.61 |
| 2026-02-14 12:00 |
03:28:10.68 |
-35:18:21.1 |
HIP 16112 |
23.77 |
| 2026-02-15 00:00 |
03:28:10.68 |
-35:18:10.3 |
HIP 16112 |
23.94 |
| 2026-02-15 12:00 |
03:28:10.69 |
-35:17:59.6 |
HIP 16112 |
24.12 |
| 2026-02-16 00:00 |
03:28:10.71 |
-35:17:48.8 |
HIP 16112 |
24.29 |
| 2026-02-16 12:00 |
03:28:10.74 |
-35:17:38.0 |
HIP 16112 |
24.46 |
| 2026-02-17 00:00 |
03:28:10.78 |
-35:17:27.3 |
HIP 16112 |
24.63 |
| 2026-02-17 12:00 |
03:28:10.83 |
-35:17:16.5 |
HIP 16112 |
24.81 |
| 2026-02-18 00:00 |
03:28:10.89 |
-35:17:05.6 |
HIP 16112 |
24.98 |
| 2026-02-18 12:00 |
03:28:10.96 |
-35:16:54.8 |
HIP 16112 |
25.16 |
| 2026-02-19 00:00 |
03:28:11.03 |
-35:16:44.0 |
HIP 16112 |
25.34 |
| 2026-02-19 12:00 |
03:28:11.12 |
-35:16:33.2 |
HIP 16112 |
25.51 |
| 2026-02-20 00:00 |
03:28:11.21 |
-35:16:22.3 |
HIP 16112 |
25.69 |
| 2026-02-20 12:00 |
03:28:11.32 |
-35:16:11.5 |
HIP 16112 |
25.87 |
| 2026-02-21 00:00 |
03:28:11.43 |
-35:16:00.7 |
HIP 16112 |
26.05 |
| 2026-02-21 12:00 |
03:28:11.55 |
-35:15:49.8 |
HIP 16112 |
26.23 |
| 2026-02-22 00:00 |
03:28:11.68 |
-35:15:39.0 |
HIP 16112 |
26.41 |
| 2026-02-22 12:00 |
03:28:11.82 |
-35:15:28.1 |
HIP 16112 |
26.59 |
| 2026-02-23 00:00 |
03:28:11.97 |
-35:15:17.3 |
HIP 16112 |
26.77 |
| 2026-02-23 12:00 |
03:28:12.13 |
-35:15:06.4 |
HIP 16112 |
26.95 |
| 2026-02-24 00:00 |
03:28:12.30 |
-35:14:55.6 |
HIP 16112 |
27.14 |