| Parameter |
Value |
| Designation |
C/2014 G1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-11-06T16:43:34.233600Z |
| Orbit solution date (soln_date, UTC) |
2022-06-20T23:12:31Z |
| Obs used |
89 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
12.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-03-11.0000000 |
| e |
0.99470139 |
| q (au) |
5.468636 |
| a (au) |
1032.088644 |
| i (deg) |
165.640250 |
| Ω (om, deg) |
337.927549 |
| ω (w, deg) |
77.054859 |
| M (ma, deg) |
0.003695 |
Magnitude
Scatter + Global Linear
$$
M_a = (4.272 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
4.272 |
| 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) |
| 2026-07-29 00:00 |
09:03:51.76 |
+11:09:35.4 |
HIP 44497 |
1.54 |
| 2026-07-29 12:00 |
09:03:55.37 |
+11:09:18.4 |
HIP 44497 |
0.61 |
| 2026-07-30 00:00 |
09:03:58.98 |
+11:09:01.4 |
HIP 44497 |
0.33 |
| 2026-07-30 12:00 |
09:04:02.60 |
+11:08:44.3 |
HIP 44497 |
1.25 |
| 2026-07-31 00:00 |
09:04:06.21 |
+11:08:27.1 |
HIP 44497 |
2.19 |
| 2026-07-31 12:00 |
09:04:09.83 |
+11:08:09.9 |
HIP 44497 |
3.12 |
| 2026-08-01 00:00 |
09:04:13.46 |
+11:07:52.5 |
HIP 44497 |
4.05 |
| 2026-08-01 12:00 |
09:04:17.08 |
+11:07:35.2 |
HIP 44497 |
4.99 |
| 2026-08-02 00:00 |
09:04:20.71 |
+11:07:17.7 |
HIP 44497 |
5.92 |
| 2026-08-02 12:00 |
09:04:24.34 |
+11:07:00.2 |
HIP 44497 |
6.86 |
| 2026-08-03 00:00 |
09:04:27.97 |
+11:06:42.6 |
HIP 44497 |
7.80 |
| 2026-08-03 12:00 |
09:04:31.60 |
+11:06:25.0 |
HIP 44497 |
8.74 |
| 2026-08-04 00:00 |
09:04:35.23 |
+11:06:07.3 |
HIP 44497 |
9.67 |
| 2026-08-04 12:00 |
09:04:38.86 |
+11:05:49.5 |
HIP 44497 |
10.61 |
| 2026-08-05 00:00 |
09:04:42.50 |
+11:05:31.7 |
HIP 44497 |
11.55 |
| 2026-08-05 12:00 |
09:04:46.13 |
+11:05:13.8 |
HIP 44497 |
12.49 |
| 2026-08-06 00:00 |
09:04:49.77 |
+11:04:55.9 |
HIP 44497 |
13.43 |
| 2026-08-06 12:00 |
09:04:53.40 |
+11:04:37.9 |
HIP 44548 |
14.28 |
| 2026-08-07 00:00 |
09:04:57.04 |
+11:04:19.9 |
HIP 44548 |
14.30 |
| 2026-08-07 12:00 |
09:05:00.67 |
+11:04:01.8 |
HIP 44548 |
14.37 |
| 2026-08-08 00:00 |
09:05:04.30 |
+11:03:43.6 |
HIP 44548 |
14.50 |
| 2026-08-08 12:00 |
09:05:07.93 |
+11:03:25.4 |
HIP 44548 |
14.70 |
| 2026-08-09 00:00 |
09:05:11.56 |
+11:03:07.2 |
HIP 44548 |
14.95 |
| 2026-08-09 12:00 |
09:05:15.19 |
+11:02:48.9 |
HIP 44548 |
15.25 |
| 2026-08-10 00:00 |
09:05:18.82 |
+11:02:30.5 |
HIP 44548 |
15.60 |
| 2026-08-10 12:00 |
09:05:22.44 |
+11:02:12.1 |
HIP 44548 |
16.00 |
| 2026-08-11 00:00 |
09:05:26.06 |
+11:01:53.7 |
HIP 44548 |
16.44 |
| 2026-08-11 12:00 |
09:05:29.68 |
+11:01:35.2 |
HIP 44548 |
16.92 |
| 2026-08-12 00:00 |
09:05:33.29 |
+11:01:16.7 |
HIP 44548 |
17.44 |
| 2026-08-12 12:00 |
09:05:36.90 |
+11:00:58.1 |
HIP 44548 |
17.99 |
| 2026-08-13 00:00 |
09:05:40.51 |
+11:00:39.5 |
HIP 44548 |
18.57 |
| 2026-08-13 12:00 |
09:05:44.11 |
+11:00:20.9 |
HIP 44548 |
19.18 |
| 2026-08-14 00:00 |
09:05:47.70 |
+11:00:02.2 |
HIP 44548 |
19.81 |
| 2026-08-14 12:00 |
09:05:51.30 |
+10:59:43.5 |
HIP 44548 |
20.46 |
| 2026-08-15 00:00 |
09:05:54.88 |
+10:59:24.8 |
HIP 44548 |
21.14 |
| 2026-08-15 12:00 |
09:05:58.47 |
+10:59:06.0 |
HIP 44548 |
21.83 |
| 2026-08-16 00:00 |
09:06:02.04 |
+10:58:47.2 |
HIP 44548 |
22.54 |
| 2026-08-16 12:00 |
09:06:05.61 |
+10:58:28.3 |
HIP 44548 |
23.26 |
| 2026-08-17 00:00 |
09:06:09.18 |
+10:58:09.5 |
HIP 44548 |
24.00 |
| 2026-08-17 12:00 |
09:06:12.74 |
+10:57:50.6 |
HIP 44548 |
24.74 |
| 2026-08-18 00:00 |
09:06:16.29 |
+10:57:31.6 |
HIP 44548 |
25.50 |
| 2026-08-18 12:00 |
09:06:19.83 |
+10:57:12.7 |
HIP 44548 |
26.27 |
| 2026-08-19 00:00 |
09:06:23.37 |
+10:56:53.7 |
HIP 44798 |
26.12 |