C/1958 R1 (Burnham-Slaughter)
| Parameter |
Value |
| Designation |
C/1958 R1 (Burnham-Slaughter) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1959-03-11T12:29:09.669120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:14Z |
| Obs used |
40 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1959-04-21.0000000 |
| e |
0.99984492 |
| q (au) |
1.628202 |
| a (au) |
10499.160647 |
| i (deg) |
61.257360 |
| Ω (om, deg) |
323.778245 |
| ω (w, deg) |
100.736624 |
| M (ma, deg) |
0.000037 |
Magnitude
Scatter + Global Linear
$$
M_a = (5.937 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
5.937 |
| 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) |
| 2026-02-03 00:00 |
11:40:43.88 |
-69:58:45.1 |
HIP 56937 |
18.56 |
| 2026-02-03 12:00 |
11:40:41.25 |
-69:58:56.0 |
HIP 56937 |
18.72 |
| 2026-02-04 00:00 |
11:40:38.60 |
-69:59:06.7 |
HIP 56937 |
18.87 |
| 2026-02-04 12:00 |
11:40:35.93 |
-69:59:17.4 |
HIP 56937 |
19.03 |
| 2026-02-05 00:00 |
11:40:33.23 |
-69:59:27.8 |
HIP 56937 |
19.19 |
| 2026-02-05 12:00 |
11:40:30.52 |
-69:59:38.2 |
HIP 56937 |
19.35 |
| 2026-02-06 00:00 |
11:40:27.79 |
-69:59:48.3 |
HIP 56937 |
19.51 |
| 2026-02-06 12:00 |
11:40:25.03 |
-69:59:58.4 |
HIP 56937 |
19.67 |
| 2026-02-07 00:00 |
11:40:22.26 |
-70:00:08.3 |
HIP 56937 |
19.84 |
| 2026-02-07 12:00 |
11:40:19.47 |
-70:00:18.0 |
HIP 56937 |
20.00 |
| 2026-02-08 00:00 |
11:40:16.66 |
-70:00:27.7 |
HIP 56937 |
20.16 |
| 2026-02-08 12:00 |
11:40:13.82 |
-70:00:37.1 |
HIP 56937 |
20.32 |
| 2026-02-09 00:00 |
11:40:10.97 |
-70:00:46.4 |
HIP 56937 |
20.49 |
| 2026-02-09 12:00 |
11:40:08.11 |
-70:00:55.6 |
HIP 56937 |
20.65 |
| 2026-02-10 00:00 |
11:40:05.22 |
-70:01:04.6 |
HIP 56937 |
20.82 |
| 2026-02-10 12:00 |
11:40:02.31 |
-70:01:13.5 |
HIP 56937 |
20.98 |
| 2026-02-11 00:00 |
11:39:59.39 |
-70:01:22.2 |
HIP 56937 |
21.15 |
| 2026-02-11 12:00 |
11:39:56.45 |
-70:01:30.7 |
HIP 56937 |
21.31 |
| 2026-02-12 00:00 |
11:39:53.49 |
-70:01:39.2 |
HIP 56937 |
21.48 |
| 2026-02-12 12:00 |
11:39:50.52 |
-70:01:47.4 |
HIP 56937 |
21.64 |
| 2026-02-13 00:00 |
11:39:47.52 |
-70:01:55.5 |
HIP 56937 |
21.81 |
| 2026-02-13 12:00 |
11:39:44.52 |
-70:02:03.5 |
HIP 56937 |
21.97 |
| 2026-02-14 00:00 |
11:39:41.49 |
-70:02:11.3 |
HIP 56937 |
22.14 |
| 2026-02-14 12:00 |
11:39:38.45 |
-70:02:18.9 |
HIP 56937 |
22.31 |
| 2026-02-15 00:00 |
11:39:35.39 |
-70:02:26.4 |
HIP 56552 |
22.15 |
| 2026-02-15 12:00 |
11:39:32.32 |
-70:02:33.7 |
HIP 56552 |
21.86 |
| 2026-02-16 00:00 |
11:39:29.23 |
-70:02:40.8 |
HIP 56552 |
21.57 |
| 2026-02-16 12:00 |
11:39:26.13 |
-70:02:47.9 |
HIP 56552 |
21.28 |
| 2026-02-17 00:00 |
11:39:23.01 |
-70:02:54.7 |
HIP 56552 |
20.99 |
| 2026-02-17 12:00 |
11:39:19.87 |
-70:03:01.4 |
HIP 56552 |
20.70 |
| 2026-02-18 00:00 |
11:39:16.73 |
-70:03:07.9 |
HIP 56552 |
20.42 |
| 2026-02-18 12:00 |
11:39:13.56 |
-70:03:14.3 |
HIP 56552 |
20.13 |
| 2026-02-19 00:00 |
11:39:10.39 |
-70:03:20.5 |
HIP 56552 |
19.84 |
| 2026-02-19 12:00 |
11:39:07.20 |
-70:03:26.5 |
HIP 56552 |
19.55 |
| 2026-02-20 00:00 |
11:39:04.00 |
-70:03:32.4 |
HIP 56552 |
19.27 |
| 2026-02-20 12:00 |
11:39:00.78 |
-70:03:38.1 |
HIP 56552 |
18.98 |
| 2026-02-21 00:00 |
11:38:57.56 |
-70:03:43.7 |
HIP 56552 |
18.69 |
| 2026-02-21 12:00 |
11:38:54.32 |
-70:03:49.0 |
HIP 56552 |
18.41 |
| 2026-02-22 00:00 |
11:38:51.07 |
-70:03:54.3 |
HIP 56552 |
18.12 |
| 2026-02-22 12:00 |
11:38:47.80 |
-70:03:59.3 |
HIP 56552 |
17.84 |
| 2026-02-23 00:00 |
11:38:44.53 |
-70:04:04.2 |
HIP 56552 |
17.55 |
| 2026-02-23 12:00 |
11:38:41.24 |
-70:04:09.0 |
HIP 56552 |
17.27 |
| 2026-02-24 00:00 |
11:38:37.94 |
-70:04:13.5 |
HIP 56552 |
16.99 |