C/2006 O2 (Garradd)
| Parameter |
Value |
| Designation |
C/2006 O2 (Garradd) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-10-05T09:45:32.495040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:58Z |
| Obs used |
84 |
| NEO |
- |
| M1 |
15.200 |
| K1 |
5.750 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2006-09-06.0000000 |
| e |
0.99635182 |
| q (au) |
1.554794 |
| a (au) |
426.184127 |
| i (deg) |
43.028733 |
| Ω (om, deg) |
283.358310 |
| ω (w, deg) |
19.984383 |
| M (ma, deg) |
359.996706 |
Magnitude
Scatter + Global Linear
$$
M_a = (15.817 + 3.338\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
15.817 |
| n |
3.338 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-02-03 00:00 |
06:47:01.83 |
+24:50:55.0 |
HIP 32527 |
3.13 |
| 2026-02-03 12:00 |
06:46:59.02 |
+24:50:55.8 |
HIP 32527 |
3.76 |
| 2026-02-04 00:00 |
06:46:56.22 |
+24:50:56.5 |
HIP 32527 |
4.38 |
| 2026-02-04 12:00 |
06:46:53.45 |
+24:50:57.3 |
HIP 32527 |
5.01 |
| 2026-02-05 00:00 |
06:46:50.69 |
+24:50:58.0 |
HIP 32527 |
5.63 |
| 2026-02-05 12:00 |
06:46:47.95 |
+24:50:58.6 |
HIP 32527 |
6.25 |
| 2026-02-06 00:00 |
06:46:45.22 |
+24:50:59.3 |
HIP 32527 |
6.86 |
| 2026-02-06 12:00 |
06:46:42.52 |
+24:50:59.9 |
HIP 32527 |
7.47 |
| 2026-02-07 00:00 |
06:46:39.84 |
+24:51:00.5 |
HIP 32527 |
8.08 |
| 2026-02-07 12:00 |
06:46:37.17 |
+24:51:01.0 |
HIP 32527 |
8.68 |
| 2026-02-08 00:00 |
06:46:34.52 |
+24:51:01.5 |
HIP 32527 |
9.28 |
| 2026-02-08 12:00 |
06:46:31.90 |
+24:51:02.0 |
HIP 32527 |
9.87 |
| 2026-02-09 00:00 |
06:46:29.29 |
+24:51:02.4 |
HIP 32527 |
10.46 |
| 2026-02-09 12:00 |
06:46:26.70 |
+24:51:02.8 |
HIP 32527 |
11.05 |
| 2026-02-10 00:00 |
06:46:24.14 |
+24:51:03.2 |
HIP 32527 |
11.63 |
| 2026-02-10 12:00 |
06:46:21.59 |
+24:51:03.5 |
HIP 32527 |
12.21 |
| 2026-02-11 00:00 |
06:46:19.07 |
+24:51:03.8 |
HIP 32527 |
12.78 |
| 2026-02-11 12:00 |
06:46:16.56 |
+24:51:04.1 |
HIP 32527 |
13.34 |
| 2026-02-12 00:00 |
06:46:14.08 |
+24:51:04.3 |
HIP 32527 |
13.91 |
| 2026-02-12 12:00 |
06:46:11.62 |
+24:51:04.5 |
HIP 32527 |
14.46 |
| 2026-02-13 00:00 |
06:46:09.17 |
+24:51:04.7 |
HIP 32369 |
14.92 |
| 2026-02-13 12:00 |
06:46:06.76 |
+24:51:04.8 |
HIP 32369 |
14.55 |
| 2026-02-14 00:00 |
06:46:04.36 |
+24:51:04.9 |
HIP 32369 |
14.18 |
| 2026-02-14 12:00 |
06:46:01.98 |
+24:51:04.9 |
HIP 32369 |
13.84 |
| 2026-02-15 00:00 |
06:45:59.63 |
+24:51:05.0 |
HIP 32369 |
13.51 |
| 2026-02-15 12:00 |
06:45:57.30 |
+24:51:05.0 |
HIP 32369 |
13.19 |
| 2026-02-16 00:00 |
06:45:54.99 |
+24:51:04.9 |
HIP 32369 |
12.90 |
| 2026-02-16 12:00 |
06:45:52.71 |
+24:51:04.8 |
HIP 32369 |
12.61 |
| 2026-02-17 00:00 |
06:45:50.45 |
+24:51:04.7 |
HIP 32369 |
12.35 |
| 2026-02-17 12:00 |
06:45:48.21 |
+24:51:04.6 |
HIP 32369 |
12.10 |
| 2026-02-18 00:00 |
06:45:45.99 |
+24:51:04.4 |
HIP 32369 |
11.88 |
| 2026-02-18 12:00 |
06:45:43.80 |
+24:51:04.2 |
HIP 32369 |
11.67 |
| 2026-02-19 00:00 |
06:45:41.64 |
+24:51:03.9 |
HIP 32369 |
11.48 |
| 2026-02-19 12:00 |
06:45:39.49 |
+24:51:03.6 |
HIP 32369 |
11.31 |
| 2026-02-20 00:00 |
06:45:37.37 |
+24:51:03.3 |
HIP 32369 |
11.16 |
| 2026-02-20 12:00 |
06:45:35.28 |
+24:51:02.9 |
HIP 32369 |
11.03 |
| 2026-02-21 00:00 |
06:45:33.21 |
+24:51:02.5 |
HIP 32369 |
10.92 |
| 2026-02-21 12:00 |
06:45:31.16 |
+24:51:02.1 |
HIP 32369 |
10.83 |
| 2026-02-22 00:00 |
06:45:29.14 |
+24:51:01.6 |
HIP 32369 |
10.75 |
| 2026-02-22 12:00 |
06:45:27.14 |
+24:51:01.1 |
HIP 32369 |
10.70 |
| 2026-02-23 00:00 |
06:45:25.17 |
+24:51:00.6 |
HIP 32369 |
10.67 |
| 2026-02-23 12:00 |
06:45:23.23 |
+24:51:00.0 |
HIP 32369 |
10.65 |
| 2026-02-24 00:00 |
06:45:21.31 |
+24:50:59.4 |
HIP 32369 |
10.65 |