| Parameter |
Value |
| Designation |
C/2007 O1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-06-03T06:51:31.746240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:10Z |
| Obs used |
164 |
| NEO |
- |
| M1 |
11.100 |
| K1 |
10.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2007-07-01.0000000 |
| e |
1.00482908 |
| q (au) |
2.876714 |
| a (au) |
-595.706845 |
| i (deg) |
24.381323 |
| Ω (om, deg) |
116.233626 |
| ω (w, deg) |
159.398541 |
| M (ma, deg) |
0.001879 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.576 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.576 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.520 |
| 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) |
| 2026-05-12 00:00 |
04:26:51.85 |
+02:40:11.9 |
HIP 20668 |
23.13 |
| 2026-05-12 12:00 |
04:26:54.91 |
+02:40:24.2 |
HIP 20668 |
23.60 |
| 2026-05-13 00:00 |
04:26:57.97 |
+02:40:36.3 |
HIP 20668 |
24.09 |
| 2026-05-13 12:00 |
04:27:01.05 |
+02:40:48.4 |
HIP 20668 |
24.60 |
| 2026-05-14 00:00 |
04:27:04.13 |
+02:41:00.3 |
HIP 20668 |
25.12 |
| 2026-05-14 12:00 |
04:27:07.21 |
+02:41:12.2 |
HIP 20668 |
25.67 |
| 2026-05-15 00:00 |
04:27:10.30 |
+02:41:23.9 |
HIP 20668 |
26.22 |
| 2026-05-15 12:00 |
04:27:13.40 |
+02:41:35.5 |
HIP 20668 |
26.79 |
| 2026-05-16 00:00 |
04:27:16.51 |
+02:41:47.0 |
HIP 20668 |
27.38 |
| 2026-05-16 12:00 |
04:27:19.62 |
+02:41:58.4 |
HIP 20668 |
27.98 |
| 2026-05-17 00:00 |
04:27:22.73 |
+02:42:09.7 |
HIP 20668 |
28.58 |
| 2026-05-17 12:00 |
04:27:25.85 |
+02:42:20.9 |
HIP 20902 |
29.08 |
| 2026-05-18 00:00 |
04:27:28.98 |
+02:42:31.9 |
HIP 20902 |
28.65 |
| 2026-05-18 12:00 |
04:27:32.11 |
+02:42:42.9 |
HIP 20902 |
28.23 |
| 2026-05-19 00:00 |
04:27:35.24 |
+02:42:53.7 |
HIP 20902 |
27.83 |
| 2026-05-19 12:00 |
04:27:38.38 |
+02:43:04.4 |
HIP 20902 |
27.44 |
| 2026-05-20 00:00 |
04:27:41.52 |
+02:43:15.0 |
HIP 20902 |
27.07 |
| 2026-05-20 12:00 |
04:27:44.67 |
+02:43:25.5 |
HIP 20902 |
26.72 |
| 2026-05-21 00:00 |
04:27:47.82 |
+02:43:35.8 |
HIP 20902 |
26.38 |
| 2026-05-21 12:00 |
04:27:50.98 |
+02:43:46.0 |
HIP 20902 |
26.07 |
| 2026-05-22 00:00 |
04:27:54.13 |
+02:43:56.1 |
HIP 20902 |
25.77 |
| 2026-05-22 12:00 |
04:27:57.29 |
+02:44:06.1 |
HIP 20902 |
25.49 |
| 2026-05-23 00:00 |
04:28:00.46 |
+02:44:16.0 |
HIP 20902 |
25.23 |
| 2026-05-23 12:00 |
04:28:03.62 |
+02:44:25.8 |
HIP 20902 |
25.00 |
| 2026-05-24 00:00 |
04:28:06.79 |
+02:44:35.4 |
HIP 20902 |
24.78 |
| 2026-05-24 12:00 |
04:28:09.96 |
+02:44:44.9 |
HIP 20902 |
24.59 |
| 2026-05-25 00:00 |
04:28:13.13 |
+02:44:54.3 |
HIP 20902 |
24.42 |
| 2026-05-25 12:00 |
04:28:16.31 |
+02:45:03.5 |
HIP 20902 |
24.28 |
| 2026-05-26 00:00 |
04:28:19.49 |
+02:45:12.7 |
HIP 20902 |
24.16 |
| 2026-05-26 12:00 |
04:28:22.66 |
+02:45:21.7 |
HIP 20902 |
24.06 |
| 2026-05-27 00:00 |
04:28:25.84 |
+02:45:30.6 |
HIP 20902 |
23.99 |
| 2026-05-27 12:00 |
04:28:29.02 |
+02:45:39.4 |
HIP 20902 |
23.94 |
| 2026-05-28 00:00 |
04:28:32.20 |
+02:45:48.0 |
HIP 20902 |
23.92 |
| 2026-05-28 12:00 |
04:28:35.38 |
+02:45:56.5 |
HIP 20902 |
23.92 |
| 2026-05-29 00:00 |
04:28:38.57 |
+02:46:04.9 |
HIP 20902 |
23.95 |
| 2026-05-29 12:00 |
04:28:41.75 |
+02:46:13.2 |
HIP 20902 |
24.01 |
| 2026-05-30 00:00 |
04:28:44.93 |
+02:46:21.4 |
HIP 20902 |
24.09 |
| 2026-05-30 12:00 |
04:28:48.11 |
+02:46:29.4 |
HIP 20902 |
24.19 |
| 2026-05-31 00:00 |
04:28:51.30 |
+02:46:37.3 |
HIP 20902 |
24.32 |
| 2026-05-31 12:00 |
04:28:54.48 |
+02:46:45.0 |
HIP 20902 |
24.47 |
| 2026-06-01 00:00 |
04:28:57.66 |
+02:46:52.7 |
HIP 20902 |
24.64 |
| 2026-06-01 12:00 |
04:29:00.84 |
+02:47:00.2 |
HIP 20902 |
24.84 |
| 2026-06-02 00:00 |
04:29:04.02 |
+02:47:07.6 |
HIP 20902 |
25.06 |