| 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
$$
M_a = (5.912 + 3.386\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
5.912 |
| n |
3.386 |
| gf |
0.986 |
| gb |
-0.975 |
| 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 |
06:41:53.25 |
-62:09:01.6 |
HIP 32207 |
29.79 |
| 2026-07-29 12:00 |
06:41:56.36 |
-62:09:13.9 |
HIP 32207 |
29.47 |
| 2026-07-30 00:00 |
06:41:59.46 |
-62:09:26.5 |
HIP 32207 |
29.15 |
| 2026-07-30 12:00 |
06:42:02.55 |
-62:09:39.2 |
HIP 32207 |
28.84 |
| 2026-07-31 00:00 |
06:42:05.62 |
-62:09:52.0 |
HIP 32207 |
28.52 |
| 2026-07-31 12:00 |
06:42:08.68 |
-62:10:05.1 |
HIP 32207 |
28.21 |
| 2026-08-01 00:00 |
06:42:11.73 |
-62:10:18.3 |
HIP 32207 |
27.89 |
| 2026-08-01 12:00 |
06:42:14.76 |
-62:10:31.7 |
HIP 32207 |
27.58 |
| 2026-08-02 00:00 |
06:42:17.78 |
-62:10:45.3 |
HIP 32207 |
27.26 |
| 2026-08-02 12:00 |
06:42:20.79 |
-62:10:59.1 |
HIP 32207 |
26.95 |
| 2026-08-03 00:00 |
06:42:23.78 |
-62:11:13.0 |
HIP 32207 |
26.64 |
| 2026-08-03 12:00 |
06:42:26.76 |
-62:11:27.1 |
HIP 32207 |
26.32 |
| 2026-08-04 00:00 |
06:42:29.72 |
-62:11:41.4 |
HIP 32207 |
26.01 |
| 2026-08-04 12:00 |
06:42:32.67 |
-62:11:55.8 |
HIP 32207 |
25.70 |
| 2026-08-05 00:00 |
06:42:35.60 |
-62:12:10.4 |
HIP 32207 |
25.39 |
| 2026-08-05 12:00 |
06:42:38.52 |
-62:12:25.2 |
HIP 32207 |
25.08 |
| 2026-08-06 00:00 |
06:42:41.42 |
-62:12:40.2 |
HIP 32207 |
24.77 |
| 2026-08-06 12:00 |
06:42:44.31 |
-62:12:55.3 |
HIP 32207 |
24.46 |
| 2026-08-07 00:00 |
06:42:47.18 |
-62:13:10.6 |
HIP 32207 |
24.15 |
| 2026-08-07 12:00 |
06:42:50.04 |
-62:13:26.1 |
HIP 32207 |
23.84 |
| 2026-08-08 00:00 |
06:42:52.87 |
-62:13:41.7 |
HIP 32207 |
23.54 |
| 2026-08-08 12:00 |
06:42:55.70 |
-62:13:57.5 |
HIP 32207 |
23.23 |
| 2026-08-09 00:00 |
06:42:58.50 |
-62:14:13.5 |
HIP 32207 |
22.93 |
| 2026-08-09 12:00 |
06:43:01.29 |
-62:14:29.6 |
HIP 32207 |
22.62 |
| 2026-08-10 00:00 |
06:43:04.06 |
-62:14:45.9 |
HIP 32207 |
22.32 |
| 2026-08-10 12:00 |
06:43:06.82 |
-62:15:02.4 |
HIP 32207 |
22.02 |
| 2026-08-11 00:00 |
06:43:09.56 |
-62:15:19.0 |
HIP 32207 |
21.72 |
| 2026-08-11 12:00 |
06:43:12.28 |
-62:15:35.8 |
HIP 32207 |
21.43 |
| 2026-08-12 00:00 |
06:43:14.98 |
-62:15:52.7 |
HIP 32207 |
21.13 |
| 2026-08-12 12:00 |
06:43:17.66 |
-62:16:09.8 |
HIP 32207 |
20.84 |
| 2026-08-13 00:00 |
06:43:20.33 |
-62:16:27.1 |
HIP 32207 |
20.54 |
| 2026-08-13 12:00 |
06:43:22.97 |
-62:16:44.5 |
HIP 32207 |
20.25 |
| 2026-08-14 00:00 |
06:43:25.60 |
-62:17:02.1 |
HIP 32207 |
19.96 |
| 2026-08-14 12:00 |
06:43:28.21 |
-62:17:19.8 |
HIP 32207 |
19.68 |
| 2026-08-15 00:00 |
06:43:30.80 |
-62:17:37.7 |
HIP 32207 |
19.40 |
| 2026-08-15 12:00 |
06:43:33.37 |
-62:17:55.7 |
HIP 32207 |
19.11 |
| 2026-08-16 00:00 |
06:43:35.92 |
-62:18:13.9 |
HIP 32207 |
18.84 |
| 2026-08-16 12:00 |
06:43:38.45 |
-62:18:32.2 |
HIP 32207 |
18.56 |
| 2026-08-17 00:00 |
06:43:40.96 |
-62:18:50.7 |
HIP 32207 |
18.29 |
| 2026-08-17 12:00 |
06:43:43.45 |
-62:19:09.3 |
HIP 32207 |
18.02 |
| 2026-08-18 00:00 |
06:43:45.92 |
-62:19:28.0 |
HIP 32207 |
17.75 |
| 2026-08-18 12:00 |
06:43:48.37 |
-62:19:47.0 |
HIP 32207 |
17.49 |
| 2026-08-19 00:00 |
06:43:50.80 |
-62:20:06.0 |
HIP 32207 |
17.23 |