| 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) |
| 2026-09-20 00:00 |
04:35:16.91 |
+02:24:14.4 |
HIP 21509 |
32.68 |
| 2026-09-20 12:00 |
04:35:16.15 |
+02:23:58.7 |
HIP 21509 |
32.98 |
| 2026-09-21 00:00 |
04:35:15.35 |
+02:23:42.9 |
HIP 21509 |
33.28 |
| 2026-09-21 12:00 |
04:35:14.54 |
+02:23:27.2 |
HIP 21509 |
33.59 |
| 2026-09-22 00:00 |
04:35:13.69 |
+02:23:11.4 |
HIP 21509 |
33.91 |
| 2026-09-22 12:00 |
04:35:12.83 |
+02:22:55.6 |
HIP 21509 |
34.23 |
| 2026-09-23 00:00 |
04:35:11.93 |
+02:22:39.8 |
HIP 21509 |
34.56 |
| 2026-09-23 12:00 |
04:35:11.01 |
+02:22:24.0 |
HIP 21509 |
34.90 |
| 2026-09-24 00:00 |
04:35:10.07 |
+02:22:08.2 |
HIP 21509 |
35.24 |
| 2026-09-24 12:00 |
04:35:09.10 |
+02:21:52.4 |
HIP 21509 |
35.58 |
| 2026-09-25 00:00 |
04:35:08.10 |
+02:21:36.5 |
HIP 21509 |
35.94 |
| 2026-09-25 12:00 |
04:35:07.08 |
+02:21:20.7 |
HIP 21509 |
36.29 |
| 2026-09-26 00:00 |
04:35:06.04 |
+02:21:04.8 |
HIP 21509 |
36.66 |
| 2026-09-26 12:00 |
04:35:04.97 |
+02:20:49.0 |
HIP 21509 |
37.02 |
| 2026-09-27 00:00 |
04:35:03.88 |
+02:20:33.1 |
HIP 21268 |
37.23 |
| 2026-09-27 12:00 |
04:35:02.76 |
+02:20:17.3 |
HIP 21268 |
36.86 |
| 2026-09-28 00:00 |
04:35:01.61 |
+02:20:01.4 |
HIP 21268 |
36.49 |
| 2026-09-28 12:00 |
04:35:00.44 |
+02:19:45.6 |
HIP 21268 |
36.11 |
| 2026-09-29 00:00 |
04:34:59.25 |
+02:19:29.7 |
HIP 21268 |
35.73 |
| 2026-09-29 12:00 |
04:34:58.03 |
+02:19:13.9 |
HIP 21268 |
35.35 |
| 2026-09-30 00:00 |
04:34:56.79 |
+02:18:58.0 |
HIP 21268 |
34.97 |
| 2026-09-30 12:00 |
04:34:55.53 |
+02:18:42.2 |
HIP 21268 |
34.58 |
| 2026-10-01 00:00 |
04:34:54.24 |
+02:18:26.3 |
HIP 21268 |
34.19 |
| 2026-10-01 12:00 |
04:34:52.92 |
+02:18:10.5 |
HIP 21268 |
33.80 |
| 2026-10-02 00:00 |
04:34:51.58 |
+02:17:54.7 |
HIP 21268 |
33.41 |
| 2026-10-02 12:00 |
04:34:50.22 |
+02:17:38.9 |
HIP 21268 |
33.02 |
| 2026-10-03 00:00 |
04:34:48.83 |
+02:17:23.1 |
HIP 21268 |
32.62 |
| 2026-10-03 12:00 |
04:34:47.42 |
+02:17:07.3 |
HIP 21268 |
32.22 |
| 2026-10-04 00:00 |
04:34:45.99 |
+02:16:51.5 |
HIP 21268 |
31.82 |
| 2026-10-04 12:00 |
04:34:44.53 |
+02:16:35.8 |
HIP 21268 |
31.42 |
| 2026-10-05 00:00 |
04:34:43.05 |
+02:16:20.1 |
HIP 21268 |
31.02 |
| 2026-10-05 12:00 |
04:34:41.54 |
+02:16:04.3 |
HIP 21268 |
30.62 |
| 2026-10-06 00:00 |
04:34:40.01 |
+02:15:48.6 |
HIP 21268 |
30.22 |
| 2026-10-06 12:00 |
04:34:38.46 |
+02:15:33.0 |
HIP 21268 |
29.81 |
| 2026-10-07 00:00 |
04:34:36.89 |
+02:15:17.3 |
HIP 21268 |
29.41 |
| 2026-10-07 12:00 |
04:34:35.29 |
+02:15:01.7 |
HIP 21268 |
29.01 |
| 2026-10-08 00:00 |
04:34:33.67 |
+02:14:46.1 |
HIP 21268 |
28.60 |
| 2026-10-08 12:00 |
04:34:32.02 |
+02:14:30.5 |
HIP 21268 |
28.20 |
| 2026-10-09 00:00 |
04:34:30.36 |
+02:14:15.0 |
HIP 21268 |
27.80 |
| 2026-10-09 12:00 |
04:34:28.67 |
+02:13:59.5 |
HIP 21268 |
27.40 |
| 2026-10-10 00:00 |
04:34:26.95 |
+02:13:44.0 |
HIP 21268 |
27.00 |
| 2026-10-10 12:00 |
04:34:25.22 |
+02:13:28.5 |
HIP 21268 |
26.60 |
| 2026-10-11 00:00 |
04:34:23.46 |
+02:13:13.1 |
HIP 21268 |
26.21 |