| Parameter |
Value |
| Designation |
C/2024 V1 (Borisov) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-04-04T02:28:15.268800Z |
| Orbit solution date (soln_date, UTC) |
2025-06-26T10:13:10Z |
| Obs used |
422 |
| NEO |
- |
| M1 |
13.600 |
| K1 |
9.250 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-11-08T01:11:04.704000Z |
| Discovery magnitude (MPC) |
19.30 G |
| Discovery observatory (MPC) |
L51 · MARGO, Nauchnyi |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2025-02-14.0000000 |
| e |
0.99016034 |
| q (au) |
2.318468 |
| a (au) |
235.624767 |
| i (deg) |
54.623265 |
| Ω (om, deg) |
328.195162 |
| ω (w, deg) |
168.663803 |
| M (ma, deg) |
359.986619 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.076 + 4.289\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.076 |
| n |
4.289 |
| gf |
1.000 |
| gb |
-0.585 |
| 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) |
| 2026-06-01 00:00 |
10:44:34.20 |
-66:00:00.5 |
HIP 52766 |
17.66 |
| 2026-06-01 12:00 |
10:44:46.30 |
-65:56:37.7 |
HIP 52766 |
15.82 |
| 2026-06-02 00:00 |
10:44:58.80 |
-65:53:15.9 |
HIP 52766 |
14.59 |
| 2026-06-02 12:00 |
10:45:11.71 |
-65:49:54.9 |
HIP 52656 |
14.06 |
| 2026-06-03 00:00 |
10:45:25.03 |
-65:46:34.9 |
HIP 52656 |
10.46 |
| 2026-06-03 12:00 |
10:45:38.74 |
-65:43:15.7 |
HIP 52656 |
6.86 |
| 2026-06-04 00:00 |
10:45:52.84 |
-65:39:57.6 |
HIP 52656 |
3.25 |
| 2026-06-04 12:00 |
10:46:07.34 |
-65:36:40.4 |
HIP 52656 |
0.49 |
| 2026-06-05 00:00 |
10:46:22.21 |
-65:33:24.2 |
HIP 52656 |
4.00 |
| 2026-06-05 12:00 |
10:46:37.47 |
-65:30:09.0 |
HIP 52656 |
7.61 |
| 2026-06-06 00:00 |
10:46:53.11 |
-65:26:54.8 |
HIP 52656 |
11.23 |
| 2026-06-06 12:00 |
10:47:09.12 |
-65:23:41.6 |
HIP 52656 |
14.86 |
| 2026-06-07 00:00 |
10:47:25.49 |
-65:20:29.5 |
HIP 52656 |
18.49 |
| 2026-06-07 12:00 |
10:47:42.24 |
-65:17:18.4 |
HIP 52656 |
22.12 |
| 2026-06-08 00:00 |
10:47:59.34 |
-65:14:08.4 |
HIP 52656 |
25.75 |
| 2026-06-08 12:00 |
10:48:16.80 |
-65:10:59.5 |
HIP 52656 |
29.39 |
| 2026-06-09 00:00 |
10:48:34.61 |
-65:07:51.8 |
HIP 52656 |
33.03 |
| 2026-06-09 12:00 |
10:48:52.77 |
-65:04:45.1 |
HIP 52716 |
31.14 |
| 2026-06-10 00:00 |
10:49:11.28 |
-65:01:39.6 |
HIP 52716 |
29.45 |
| 2026-06-10 12:00 |
10:49:30.14 |
-64:58:35.2 |
HIP 52970 |
26.30 |
| 2026-06-11 00:00 |
10:49:49.33 |
-64:55:32.0 |
HIP 52970 |
23.08 |
| 2026-06-11 12:00 |
10:50:08.85 |
-64:52:30.0 |
HIP 52970 |
20.04 |
| 2026-06-12 00:00 |
10:50:28.71 |
-64:49:29.2 |
HIP 52970 |
17.27 |
| 2026-06-12 12:00 |
10:50:48.90 |
-64:46:29.5 |
HIP 52970 |
14.94 |
| 2026-06-13 00:00 |
10:51:09.41 |
-64:43:31.1 |
HIP 52970 |
13.28 |
| 2026-06-13 12:00 |
10:51:30.24 |
-64:40:34.0 |
HIP 52970 |
12.57 |
| 2026-06-14 00:00 |
10:51:51.39 |
-64:37:38.1 |
HIP 53016 |
11.31 |
| 2026-06-14 12:00 |
10:52:12.85 |
-64:34:43.4 |
HIP 53164 |
10.13 |
| 2026-06-15 00:00 |
10:52:34.63 |
-64:31:50.1 |
HIP 53164 |
6.99 |
| 2026-06-15 12:00 |
10:52:56.71 |
-64:28:58.0 |
HIP 53164 |
4.81 |
| 2026-06-16 00:00 |
10:53:19.10 |
-64:26:07.3 |
HIP 53164 |
5.07 |
| 2026-06-16 12:00 |
10:53:41.79 |
-64:23:17.8 |
HIP 53164 |
7.52 |
| 2026-06-17 00:00 |
10:54:04.77 |
-64:20:29.7 |
HIP 53164 |
10.77 |
| 2026-06-17 12:00 |
10:54:28.04 |
-64:17:42.9 |
HIP 53164 |
14.28 |
| 2026-06-18 00:00 |
10:54:51.61 |
-64:14:57.5 |
HIP 53330 |
16.79 |
| 2026-06-18 12:00 |
10:55:15.46 |
-64:12:13.4 |
HIP 53330 |
14.79 |
| 2026-06-19 00:00 |
10:55:39.60 |
-64:09:30.7 |
HIP 53330 |
13.60 |
| 2026-06-19 12:00 |
10:56:04.01 |
-64:06:49.4 |
HIP 53330 |
13.46 |
| 2026-06-20 00:00 |
10:56:28.70 |
-64:04:09.5 |
HIP 53330 |
14.40 |
| 2026-06-20 12:00 |
10:56:53.66 |
-64:01:31.0 |
HIP 53332 |
16.21 |
| 2026-06-21 00:00 |
10:57:18.89 |
-63:58:53.8 |
HIP 53332 |
18.65 |
| 2026-06-21 12:00 |
10:57:44.38 |
-63:56:18.1 |
HIP 53332 |
21.52 |
| 2026-06-22 00:00 |
10:58:10.14 |
-63:53:43.8 |
HIP 53332 |
24.69 |