| Parameter |
Value |
| Designation |
C/2024 G7 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-02-10T07:30:42.638400Z |
| Orbit solution date (soln_date, UTC) |
2026-07-16T19:12:17Z |
| Obs used |
87 |
| NEO |
- |
| M1 |
11.700 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-04-03T08:20:06.028800Z |
| Discovery magnitude (MPC) |
19.41 o |
| Discovery observatory (MPC) |
W68 · ATLAS Chile, Rio Hurtado |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2024-08-02.0000000 |
| e |
1.00163060 |
| q (au) |
6.027583 |
| a (au) |
-3696.547778 |
| i (deg) |
131.518826 |
| Ω (om, deg) |
191.947715 |
| ω (w, deg) |
289.665421 |
| M (ma, deg) |
-0.000843 |
Magnitude
Scatter + Global Linear
$$
M_a = (10.493 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
10.493 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-1.000 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
12:47:34.42 |
-24:53:12.0 |
HIP 62448 |
4.84 |
| 2026-07-29 12:00 |
12:47:38.69 |
-24:50:41.1 |
HIP 62448 |
3.42 |
| 2026-07-30 00:00 |
12:47:43.08 |
-24:48:11.5 |
HIP 62448 |
3.78 |
| 2026-07-30 12:00 |
12:47:47.58 |
-24:45:43.2 |
HIP 62448 |
5.56 |
| 2026-07-31 00:00 |
12:47:52.18 |
-24:43:16.3 |
HIP 62471 |
6.48 |
| 2026-07-31 12:00 |
12:47:56.90 |
-24:40:50.8 |
HIP 62471 |
8.04 |
| 2026-08-01 00:00 |
12:48:01.72 |
-24:38:26.6 |
HIP 62471 |
10.04 |
| 2026-08-01 12:00 |
12:48:06.65 |
-24:36:03.7 |
HIP 62471 |
12.27 |
| 2026-08-02 00:00 |
12:48:11.68 |
-24:33:42.1 |
HIP 62471 |
14.60 |
| 2026-08-02 12:00 |
12:48:16.82 |
-24:31:21.8 |
HIP 62471 |
17.00 |
| 2026-08-03 00:00 |
12:48:22.06 |
-24:29:02.9 |
HIP 62471 |
19.44 |
| 2026-08-03 12:00 |
12:48:27.41 |
-24:26:45.3 |
HIP 62471 |
21.90 |
| 2026-08-04 00:00 |
12:48:32.86 |
-24:24:29.0 |
HIP 62471 |
24.37 |
| 2026-08-04 12:00 |
12:48:38.41 |
-24:22:14.0 |
HIP 62659 |
24.91 |
| 2026-08-05 00:00 |
12:48:44.06 |
-24:20:00.3 |
HIP 62659 |
22.95 |
| 2026-08-05 12:00 |
12:48:49.81 |
-24:17:47.9 |
HIP 62659 |
21.11 |
| 2026-08-06 00:00 |
12:48:55.67 |
-24:15:36.8 |
HIP 62659 |
19.41 |
| 2026-08-06 12:00 |
12:49:01.62 |
-24:13:26.9 |
HIP 62659 |
17.89 |
| 2026-08-07 00:00 |
12:49:07.66 |
-24:11:18.4 |
HIP 62659 |
16.60 |
| 2026-08-07 12:00 |
12:49:13.81 |
-24:09:11.1 |
HIP 62659 |
15.60 |
| 2026-08-08 00:00 |
12:49:20.05 |
-24:07:05.1 |
HIP 62659 |
14.93 |
| 2026-08-08 12:00 |
12:49:26.38 |
-24:05:00.4 |
HIP 62659 |
14.65 |
| 2026-08-09 00:00 |
12:49:32.81 |
-24:02:56.9 |
HIP 62659 |
14.78 |
| 2026-08-09 12:00 |
12:49:39.33 |
-24:00:54.7 |
HIP 62659 |
15.29 |
| 2026-08-10 00:00 |
12:49:45.94 |
-23:58:53.8 |
HIP 62659 |
16.16 |
| 2026-08-10 12:00 |
12:49:52.65 |
-23:56:54.1 |
HIP 62659 |
17.32 |
| 2026-08-11 00:00 |
12:49:59.45 |
-23:54:55.6 |
HIP 62659 |
18.73 |
| 2026-08-11 12:00 |
12:50:06.33 |
-23:52:58.4 |
HIP 62659 |
20.32 |
| 2026-08-12 00:00 |
12:50:13.31 |
-23:51:02.4 |
HIP 62659 |
22.07 |
| 2026-08-12 12:00 |
12:50:20.37 |
-23:49:07.6 |
HIP 62659 |
23.93 |
| 2026-08-13 00:00 |
12:50:27.52 |
-23:47:14.1 |
HIP 62659 |
25.88 |
| 2026-08-13 12:00 |
12:50:34.76 |
-23:45:21.7 |
HIP 62659 |
27.90 |
| 2026-08-14 00:00 |
12:50:42.08 |
-23:43:30.6 |
HIP 62659 |
29.97 |
| 2026-08-14 12:00 |
12:50:49.49 |
-23:41:40.7 |
HIP 62659 |
32.09 |
| 2026-08-15 00:00 |
12:50:56.98 |
-23:39:52.0 |
HIP 62659 |
34.24 |
| 2026-08-15 12:00 |
12:51:04.55 |
-23:38:04.4 |
HIP 62834 |
36.27 |
| 2026-08-16 00:00 |
12:51:12.20 |
-23:36:18.1 |
HIP 62834 |
33.82 |
| 2026-08-16 12:00 |
12:51:19.93 |
-23:34:32.9 |
HIP 62834 |
31.38 |
| 2026-08-17 00:00 |
12:51:27.74 |
-23:32:48.9 |
HIP 62834 |
28.96 |
| 2026-08-17 12:00 |
12:51:35.64 |
-23:31:06.0 |
HIP 62834 |
26.55 |
| 2026-08-18 00:00 |
12:51:43.60 |
-23:29:24.3 |
HIP 62834 |
24.18 |
| 2026-08-18 12:00 |
12:51:51.65 |
-23:27:43.8 |
HIP 62834 |
21.84 |
| 2026-08-19 00:00 |
12:51:59.77 |
-23:26:04.4 |
HIP 62834 |
19.55 |