| Parameter |
Value |
| Designation |
C/2007 B2 (Skiff) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2008-08-20T20:11:20.682240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:03Z |
| Obs used |
1527 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
7.250 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2008-03-08.0000000 |
| e |
0.99596321 |
| q (au) |
2.974916 |
| a (au) |
736.951176 |
| i (deg) |
27.495297 |
| Ω (om, deg) |
14.868892 |
| ω (w, deg) |
205.997314 |
| M (ma, deg) |
359.991830 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.353 + 2.105\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.353 |
| n |
2.105 |
| gf |
1.000 |
| gb |
-0.636 |
| k |
0.800 |
| 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) |
| 2026-06-01 00:00 |
00:41:20.55 |
+00:55:22.7 |
HIP 3296 |
12.05 |
| 2026-06-01 12:00 |
00:41:22.24 |
+00:55:32.6 |
HIP 3296 |
11.60 |
| 2026-06-02 00:00 |
00:41:23.90 |
+00:55:42.4 |
HIP 3296 |
11.16 |
| 2026-06-02 12:00 |
00:41:25.55 |
+00:55:52.0 |
HIP 3296 |
10.73 |
| 2026-06-03 00:00 |
00:41:27.17 |
+00:56:01.4 |
HIP 3296 |
10.30 |
| 2026-06-03 12:00 |
00:41:28.77 |
+00:56:10.7 |
HIP 3296 |
9.88 |
| 2026-06-04 00:00 |
00:41:30.35 |
+00:56:19.8 |
HIP 3296 |
9.46 |
| 2026-06-04 12:00 |
00:41:31.91 |
+00:56:28.8 |
HIP 3296 |
9.05 |
| 2026-06-05 00:00 |
00:41:33.45 |
+00:56:37.6 |
HIP 3296 |
8.65 |
| 2026-06-05 12:00 |
00:41:34.96 |
+00:56:46.3 |
HIP 3296 |
8.26 |
| 2026-06-06 00:00 |
00:41:36.46 |
+00:56:54.9 |
HIP 3296 |
7.87 |
| 2026-06-06 12:00 |
00:41:37.93 |
+00:57:03.2 |
HIP 3296 |
7.49 |
| 2026-06-07 00:00 |
00:41:39.37 |
+00:57:11.5 |
HIP 3296 |
7.12 |
| 2026-06-07 12:00 |
00:41:40.80 |
+00:57:19.5 |
HIP 3296 |
6.75 |
| 2026-06-08 00:00 |
00:41:42.20 |
+00:57:27.4 |
HIP 3296 |
6.39 |
| 2026-06-08 12:00 |
00:41:43.58 |
+00:57:35.2 |
HIP 3296 |
6.04 |
| 2026-06-09 00:00 |
00:41:44.94 |
+00:57:42.8 |
HIP 3296 |
5.70 |
| 2026-06-09 12:00 |
00:41:46.28 |
+00:57:50.3 |
HIP 3296 |
5.37 |
| 2026-06-10 00:00 |
00:41:47.59 |
+00:57:57.6 |
HIP 3296 |
5.04 |
| 2026-06-10 12:00 |
00:41:48.88 |
+00:58:04.7 |
HIP 3296 |
4.73 |
| 2026-06-11 00:00 |
00:41:50.14 |
+00:58:11.7 |
HIP 3296 |
4.43 |
| 2026-06-11 12:00 |
00:41:51.39 |
+00:58:18.5 |
HIP 3296 |
4.13 |
| 2026-06-12 00:00 |
00:41:52.60 |
+00:58:25.1 |
HIP 3296 |
3.85 |
| 2026-06-12 12:00 |
00:41:53.80 |
+00:58:31.6 |
HIP 3296 |
3.58 |
| 2026-06-13 00:00 |
00:41:54.97 |
+00:58:38.0 |
HIP 3296 |
3.33 |
| 2026-06-13 12:00 |
00:41:56.12 |
+00:58:44.2 |
HIP 3296 |
3.09 |
| 2026-06-14 00:00 |
00:41:57.25 |
+00:58:50.2 |
HIP 3296 |
2.87 |
| 2026-06-14 12:00 |
00:41:58.35 |
+00:58:56.1 |
HIP 3296 |
2.67 |
| 2026-06-15 00:00 |
00:41:59.42 |
+00:59:01.8 |
HIP 3296 |
2.50 |
| 2026-06-15 12:00 |
00:42:00.48 |
+00:59:07.3 |
HIP 3296 |
2.34 |
| 2026-06-16 00:00 |
00:42:01.50 |
+00:59:12.7 |
HIP 3296 |
2.22 |
| 2026-06-16 12:00 |
00:42:02.51 |
+00:59:17.9 |
HIP 3296 |
2.12 |
| 2026-06-17 00:00 |
00:42:03.49 |
+00:59:22.9 |
HIP 3296 |
2.06 |
| 2026-06-17 12:00 |
00:42:04.45 |
+00:59:27.8 |
HIP 3296 |
2.03 |
| 2026-06-18 00:00 |
00:42:05.38 |
+00:59:32.6 |
HIP 3296 |
2.03 |
| 2026-06-18 12:00 |
00:42:06.28 |
+00:59:37.1 |
HIP 3296 |
2.06 |
| 2026-06-19 00:00 |
00:42:07.17 |
+00:59:41.5 |
HIP 3296 |
2.12 |
| 2026-06-19 12:00 |
00:42:08.03 |
+00:59:45.8 |
HIP 3296 |
2.20 |
| 2026-06-20 00:00 |
00:42:08.86 |
+00:59:49.8 |
HIP 3296 |
2.29 |
| 2026-06-20 12:00 |
00:42:09.67 |
+00:59:53.8 |
HIP 3296 |
2.40 |
| 2026-06-21 00:00 |
00:42:10.45 |
+00:59:57.5 |
HIP 3296 |
2.52 |
| 2026-06-21 12:00 |
00:42:11.21 |
+01:00:01.1 |
HIP 3296 |
2.64 |
| 2026-06-22 00:00 |
00:42:11.95 |
+01:00:04.5 |
HIP 3296 |
2.77 |