C/1976 U1 (Lovas)
| Parameter |
Value |
| Designation |
C/1976 U1 (Lovas) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1976-07-06T14:19:56.015040Z |
| Orbit solution date (soln_date, UTC) |
2023-08-28T01:42:39Z |
| Obs used |
34 |
| NEO |
- |
| M1 |
6.200 |
| K1 |
9.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1977-02-05.0000000 |
| e |
1.00366837 |
| q (au) |
5.857482 |
| a (au) |
-1596.751644 |
| i (deg) |
86.628655 |
| Ω (om, deg) |
286.041394 |
| ω (w, deg) |
118.810853 |
| M (ma, deg) |
0.003296 |
Magnitude
Scatter + Global Linear
$$
M_a = (5.909 + 3.387\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
5.909 |
| n |
3.387 |
| gf |
0.994 |
| gb |
-0.998 |
| 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) |
| 2026-02-03 00:00 |
06:34:46.33 |
-63:24:53.9 |
HIP 31386 |
9.17 |
| 2026-02-03 12:00 |
06:34:43.22 |
-63:24:40.2 |
HIP 31386 |
8.95 |
| 2026-02-04 00:00 |
06:34:40.13 |
-63:24:26.2 |
HIP 31386 |
8.74 |
| 2026-02-04 12:00 |
06:34:37.06 |
-63:24:12.1 |
HIP 31386 |
8.55 |
| 2026-02-05 00:00 |
06:34:34.00 |
-63:23:57.8 |
HIP 31386 |
8.36 |
| 2026-02-05 12:00 |
06:34:30.97 |
-63:23:43.3 |
HIP 31386 |
8.19 |
| 2026-02-06 00:00 |
06:34:27.97 |
-63:23:28.6 |
HIP 31386 |
8.04 |
| 2026-02-06 12:00 |
06:34:24.98 |
-63:23:13.8 |
HIP 31386 |
7.90 |
| 2026-02-07 00:00 |
06:34:22.01 |
-63:22:58.8 |
HIP 31386 |
7.78 |
| 2026-02-07 12:00 |
06:34:19.07 |
-63:22:43.6 |
HIP 31386 |
7.67 |
| 2026-02-08 00:00 |
06:34:16.15 |
-63:22:28.2 |
HIP 31386 |
7.58 |
| 2026-02-08 12:00 |
06:34:13.25 |
-63:22:12.7 |
HIP 31386 |
7.51 |
| 2026-02-09 00:00 |
06:34:10.38 |
-63:21:57.0 |
HIP 31386 |
7.46 |
| 2026-02-09 12:00 |
06:34:07.52 |
-63:21:41.1 |
HIP 31386 |
7.42 |
| 2026-02-10 00:00 |
06:34:04.69 |
-63:21:25.1 |
HIP 31386 |
7.41 |
| 2026-02-10 12:00 |
06:34:01.89 |
-63:21:08.9 |
HIP 31386 |
7.42 |
| 2026-02-11 00:00 |
06:33:59.11 |
-63:20:52.5 |
HIP 31386 |
7.44 |
| 2026-02-11 12:00 |
06:33:56.35 |
-63:20:36.0 |
HIP 31386 |
7.49 |
| 2026-02-12 00:00 |
06:33:53.61 |
-63:20:19.3 |
HIP 31386 |
7.55 |
| 2026-02-12 12:00 |
06:33:50.90 |
-63:20:02.4 |
HIP 31386 |
7.63 |
| 2026-02-13 00:00 |
06:33:48.22 |
-63:19:45.4 |
HIP 31386 |
7.73 |
| 2026-02-13 12:00 |
06:33:45.56 |
-63:19:28.3 |
HIP 31386 |
7.85 |
| 2026-02-14 00:00 |
06:33:42.92 |
-63:19:10.9 |
HIP 31386 |
7.98 |
| 2026-02-14 12:00 |
06:33:40.31 |
-63:18:53.5 |
HIP 31386 |
8.13 |
| 2026-02-15 00:00 |
06:33:37.73 |
-63:18:35.8 |
HIP 31386 |
8.29 |
| 2026-02-15 12:00 |
06:33:35.17 |
-63:18:18.1 |
HIP 31386 |
8.47 |
| 2026-02-16 00:00 |
06:33:32.64 |
-63:18:00.1 |
HIP 31386 |
8.66 |
| 2026-02-16 12:00 |
06:33:30.13 |
-63:17:42.1 |
HIP 31386 |
8.86 |
| 2026-02-17 00:00 |
06:33:27.65 |
-63:17:23.8 |
HIP 31386 |
9.07 |
| 2026-02-17 12:00 |
06:33:25.19 |
-63:17:05.5 |
HIP 31386 |
9.29 |
| 2026-02-18 00:00 |
06:33:22.76 |
-63:16:47.0 |
HIP 31386 |
9.53 |
| 2026-02-18 12:00 |
06:33:20.36 |
-63:16:28.3 |
HIP 31386 |
9.77 |
| 2026-02-19 00:00 |
06:33:17.99 |
-63:16:09.5 |
HIP 31386 |
10.02 |
| 2026-02-19 12:00 |
06:33:15.64 |
-63:15:50.6 |
HIP 31386 |
10.27 |
| 2026-02-20 00:00 |
06:33:13.32 |
-63:15:31.6 |
HIP 31386 |
10.53 |
| 2026-02-20 12:00 |
06:33:11.03 |
-63:15:12.4 |
HIP 31386 |
10.80 |
| 2026-02-21 00:00 |
06:33:08.76 |
-63:14:53.0 |
HIP 31386 |
11.08 |
| 2026-02-21 12:00 |
06:33:06.53 |
-63:14:33.6 |
HIP 31386 |
11.36 |
| 2026-02-22 00:00 |
06:33:04.32 |
-63:14:14.0 |
HIP 31386 |
11.65 |
| 2026-02-22 12:00 |
06:33:02.14 |
-63:13:54.3 |
HIP 31386 |
11.94 |
| 2026-02-23 00:00 |
06:32:59.98 |
-63:13:34.5 |
HIP 31386 |
12.23 |
| 2026-02-23 12:00 |
06:32:57.86 |
-63:13:14.5 |
HIP 31386 |
12.53 |
| 2026-02-24 00:00 |
06:32:55.76 |
-63:12:54.5 |
HIP 31386 |
12.83 |