C/1959 Y1 (Burnham)
| Parameter |
Value |
| Designation |
C/1959 Y1 (Burnham) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1960-03-20T23:55:16.296960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:14Z |
| Obs used |
35 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
1960-04-04.0000000 |
| e |
1.00029776 |
| q (au) |
0.504411 |
| a (au) |
-1694.000993 |
| i (deg) |
159.600859 |
| Ω (om, deg) |
252.642575 |
| ω (w, deg) |
306.631855 |
| M (ma, deg) |
0.000198 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.979 + 3.474\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.979 |
| n |
3.474 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.000 |
| 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
Residuals (Piecewise)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| Start (UTC) |
End (UTC) |
a |
b |
| 1960-01-04 |
1960-02-17 |
-2.6200 |
+2.620 |
| 1960-03-21 |
1960-05-01 |
+1.7781 |
+0.058 |
| 1960-05-01 |
1960-05-26 |
+12.0728 |
-0.973 |
| 1960-05-26 |
1960-06-17 |
+62.1868 |
-9.013 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
09:26:52.93 |
+34:07:33.8 |
HIP 46289 |
15.13 |
| 2026-02-03 12:00 |
09:26:51.40 |
+34:07:40.3 |
HIP 46289 |
15.10 |
| 2026-02-04 00:00 |
09:26:49.88 |
+34:07:46.7 |
HIP 46289 |
15.09 |
| 2026-02-04 12:00 |
09:26:48.35 |
+34:07:53.1 |
HIP 46289 |
15.08 |
| 2026-02-05 00:00 |
09:26:46.82 |
+34:07:59.4 |
HIP 46289 |
15.07 |
| 2026-02-05 12:00 |
09:26:45.29 |
+34:08:05.7 |
HIP 46289 |
15.08 |
| 2026-02-06 00:00 |
09:26:43.76 |
+34:08:11.9 |
HIP 46289 |
15.09 |
| 2026-02-06 12:00 |
09:26:42.23 |
+34:08:18.0 |
HIP 46289 |
15.10 |
| 2026-02-07 00:00 |
09:26:40.70 |
+34:08:24.2 |
HIP 46289 |
15.12 |
| 2026-02-07 12:00 |
09:26:39.17 |
+34:08:30.2 |
HIP 46289 |
15.15 |
| 2026-02-08 00:00 |
09:26:37.64 |
+34:08:36.2 |
HIP 46289 |
15.19 |
| 2026-02-08 12:00 |
09:26:36.10 |
+34:08:42.1 |
HIP 46289 |
15.23 |
| 2026-02-09 00:00 |
09:26:34.57 |
+34:08:48.0 |
HIP 46289 |
15.28 |
| 2026-02-09 12:00 |
09:26:33.04 |
+34:08:53.8 |
HIP 46289 |
15.33 |
| 2026-02-10 00:00 |
09:26:31.51 |
+34:08:59.6 |
HIP 46289 |
15.39 |
| 2026-02-10 12:00 |
09:26:29.98 |
+34:09:05.3 |
HIP 46289 |
15.46 |
| 2026-02-11 00:00 |
09:26:28.45 |
+34:09:10.9 |
HIP 46289 |
15.53 |
| 2026-02-11 12:00 |
09:26:26.92 |
+34:09:16.5 |
HIP 46289 |
15.60 |
| 2026-02-12 00:00 |
09:26:25.39 |
+34:09:22.0 |
HIP 46289 |
15.69 |
| 2026-02-12 12:00 |
09:26:23.86 |
+34:09:27.5 |
HIP 46289 |
15.77 |
| 2026-02-13 00:00 |
09:26:22.33 |
+34:09:32.9 |
HIP 46289 |
15.87 |
| 2026-02-13 12:00 |
09:26:20.80 |
+34:09:38.2 |
HIP 46289 |
15.97 |
| 2026-02-14 00:00 |
09:26:19.28 |
+34:09:43.5 |
HIP 46289 |
16.07 |
| 2026-02-14 12:00 |
09:26:17.76 |
+34:09:48.7 |
HIP 46289 |
16.18 |
| 2026-02-15 00:00 |
09:26:16.23 |
+34:09:53.9 |
HIP 46289 |
16.29 |
| 2026-02-15 12:00 |
09:26:14.71 |
+34:09:59.0 |
HIP 46289 |
16.41 |
| 2026-02-16 00:00 |
09:26:13.19 |
+34:10:04.0 |
HIP 46289 |
16.53 |
| 2026-02-16 12:00 |
09:26:11.67 |
+34:10:08.9 |
HIP 46289 |
16.66 |
| 2026-02-17 00:00 |
09:26:10.16 |
+34:10:13.8 |
HIP 46289 |
16.79 |
| 2026-02-17 12:00 |
09:26:08.65 |
+34:10:18.7 |
HIP 46289 |
16.92 |
| 2026-02-18 00:00 |
09:26:07.13 |
+34:10:23.4 |
HIP 46289 |
17.06 |
| 2026-02-18 12:00 |
09:26:05.63 |
+34:10:28.1 |
HIP 46289 |
17.21 |
| 2026-02-19 00:00 |
09:26:04.12 |
+34:10:32.7 |
HIP 46289 |
17.35 |
| 2026-02-19 12:00 |
09:26:02.62 |
+34:10:37.3 |
HIP 46289 |
17.50 |
| 2026-02-20 00:00 |
09:26:01.11 |
+34:10:41.8 |
HIP 46289 |
17.65 |
| 2026-02-20 12:00 |
09:25:59.62 |
+34:10:46.2 |
HIP 46289 |
17.81 |
| 2026-02-21 00:00 |
09:25:58.12 |
+34:10:50.6 |
HIP 46289 |
17.97 |
| 2026-02-21 12:00 |
09:25:56.63 |
+34:10:54.9 |
HIP 46289 |
18.13 |
| 2026-02-22 00:00 |
09:25:55.14 |
+34:10:59.1 |
HIP 46289 |
18.30 |
| 2026-02-22 12:00 |
09:25:53.65 |
+34:11:03.3 |
HIP 46289 |
18.46 |
| 2026-02-23 00:00 |
09:25:52.17 |
+34:11:07.4 |
HIP 46289 |
18.63 |
| 2026-02-23 12:00 |
09:25:50.69 |
+34:11:11.4 |
HIP 46289 |
18.81 |
| 2026-02-24 00:00 |
09:25:49.22 |
+34:11:15.3 |
HIP 46289 |
18.98 |