| Parameter |
Value |
| Designation |
C/2000 G2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-02-06T05:07:48.432000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:04Z |
| Obs used |
136 |
| NEO |
- |
| M1 |
12.800 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2000-04-19.0000000 |
| e |
0.80953903 |
| q (au) |
2.716942 |
| a (au) |
14.265084 |
| i (deg) |
170.479176 |
| Ω (om, deg) |
328.384926 |
| ω (w, deg) |
101.764704 |
| M (ma, deg) |
1.331502 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.341 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.341 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.713 |
| 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) |
| 2026-03-26 00:00 |
03:01:10.62 |
+07:51:14.0 |
HIP 14126 |
14.87 |
| 2026-03-26 12:00 |
03:01:13.43 |
+07:51:33.7 |
HIP 14126 |
14.18 |
| 2026-03-27 00:00 |
03:01:16.26 |
+07:51:53.5 |
HIP 14126 |
13.49 |
| 2026-03-27 12:00 |
03:01:19.12 |
+07:52:13.3 |
HIP 14126 |
12.80 |
| 2026-03-28 00:00 |
03:01:21.99 |
+07:52:33.1 |
HIP 14126 |
12.12 |
| 2026-03-28 12:00 |
03:01:24.90 |
+07:52:52.9 |
HIP 14126 |
11.44 |
| 2026-03-29 00:00 |
03:01:27.82 |
+07:53:12.8 |
HIP 14126 |
10.77 |
| 2026-03-29 12:00 |
03:01:30.77 |
+07:53:32.7 |
HIP 14126 |
10.12 |
| 2026-03-30 00:00 |
03:01:33.74 |
+07:53:52.6 |
HIP 14126 |
9.49 |
| 2026-03-30 12:00 |
03:01:36.74 |
+07:54:12.5 |
HIP 14126 |
8.88 |
| 2026-03-31 00:00 |
03:01:39.75 |
+07:54:32.5 |
HIP 14126 |
8.30 |
| 2026-03-31 12:00 |
03:01:42.79 |
+07:54:52.4 |
HIP 14126 |
7.75 |
| 2026-04-01 00:00 |
03:01:45.85 |
+07:55:12.4 |
HIP 14126 |
7.26 |
| 2026-04-01 12:00 |
03:01:48.93 |
+07:55:32.4 |
HIP 14126 |
6.82 |
| 2026-04-02 00:00 |
03:01:52.04 |
+07:55:52.4 |
HIP 14126 |
6.46 |
| 2026-04-02 12:00 |
03:01:55.16 |
+07:56:12.4 |
HIP 14126 |
6.19 |
| 2026-04-03 00:00 |
03:01:58.30 |
+07:56:32.4 |
HIP 14126 |
6.03 |
| 2026-04-03 12:00 |
03:02:01.47 |
+07:56:52.4 |
HIP 14126 |
5.98 |
| 2026-04-04 00:00 |
03:02:04.65 |
+07:57:12.4 |
HIP 14126 |
6.04 |
| 2026-04-04 12:00 |
03:02:07.86 |
+07:57:32.5 |
HIP 14126 |
6.23 |
| 2026-04-05 00:00 |
03:02:11.08 |
+07:57:52.5 |
HIP 14126 |
6.53 |
| 2026-04-05 12:00 |
03:02:14.33 |
+07:58:12.5 |
HIP 14126 |
6.92 |
| 2026-04-06 00:00 |
03:02:17.59 |
+07:58:32.6 |
HIP 14126 |
7.39 |
| 2026-04-06 12:00 |
03:02:20.88 |
+07:58:52.6 |
HIP 14126 |
7.94 |
| 2026-04-07 00:00 |
03:02:24.18 |
+07:59:12.6 |
HIP 14126 |
8.54 |
| 2026-04-07 12:00 |
03:02:27.50 |
+07:59:32.7 |
HIP 14126 |
9.19 |
| 2026-04-08 00:00 |
03:02:30.84 |
+07:59:52.7 |
HIP 14126 |
9.88 |
| 2026-04-08 12:00 |
03:02:34.19 |
+08:00:12.7 |
HIP 14126 |
10.60 |
| 2026-04-09 00:00 |
03:02:37.57 |
+08:00:32.7 |
HIP 14126 |
11.35 |
| 2026-04-09 12:00 |
03:02:40.96 |
+08:00:52.7 |
HIP 14126 |
12.12 |
| 2026-04-10 00:00 |
03:02:44.37 |
+08:01:12.7 |
HIP 14126 |
12.92 |
| 2026-04-10 12:00 |
03:02:47.80 |
+08:01:32.7 |
HIP 14126 |
13.73 |
| 2026-04-11 00:00 |
03:02:51.24 |
+08:01:52.6 |
HIP 14126 |
14.55 |
| 2026-04-11 12:00 |
03:02:54.70 |
+08:02:12.6 |
HIP 14126 |
15.39 |
| 2026-04-12 00:00 |
03:02:58.18 |
+08:02:32.5 |
HIP 14126 |
16.23 |
| 2026-04-12 12:00 |
03:03:01.67 |
+08:02:52.4 |
HIP 14126 |
17.09 |
| 2026-04-13 00:00 |
03:03:05.18 |
+08:03:12.3 |
HIP 14126 |
17.96 |
| 2026-04-13 12:00 |
03:03:08.70 |
+08:03:32.2 |
HIP 14126 |
18.84 |
| 2026-04-14 00:00 |
03:03:12.24 |
+08:03:52.0 |
HIP 14126 |
19.72 |
| 2026-04-14 12:00 |
03:03:15.79 |
+08:04:11.8 |
HIP 14126 |
20.61 |
| 2026-04-15 00:00 |
03:03:19.36 |
+08:04:31.6 |
HIP 14126 |
21.51 |
| 2026-04-15 12:00 |
03:03:22.94 |
+08:04:51.4 |
HIP 14334 |
21.69 |
| 2026-04-16 00:00 |
03:03:26.54 |
+08:05:11.1 |
HIP 14334 |
20.78 |