메타데이터
| 항목 |
값 |
| Designation |
436P/Garradd |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-09-27T18:17:01.438080Z |
| Orbit solution date (soln_date, UTC) |
2022-12-08T23:43:50Z |
| Obs used |
113 |
| NEO |
- |
| M1 |
11.300 |
| K1 |
23.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2021-10-24T10:16:59.808000Z |
| Discovery magnitude (MPC) |
19.40 T |
| Discovery observatory (MPC) |
Q62 · iTelescope Observatory, Siding Spring |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-04-11.0000000 |
| e |
0.67183664 |
| q (au) |
1.923695 |
| a (au) |
5.862005 |
| i (deg) |
20.206219 |
| Ω (om, deg) |
87.397920 |
| ω (w, deg) |
283.069780 |
| M (ma, deg) |
89.668749 |
밝기
산란 + 전체 선형
$$
M_a = (12.835 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.835 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
11:31:44.68 |
+26:02:16.0 |
HIP 56385 |
24.63 |
| 2026-05-12 12:00 |
11:31:40.34 |
+26:01:30.6 |
HIP 56385 |
25.78 |
| 2026-05-13 00:00 |
11:31:36.12 |
+26:00:44.5 |
HIP 56385 |
26.91 |
| 2026-05-13 12:00 |
11:31:32.01 |
+25:59:57.5 |
HIP 56385 |
28.03 |
| 2026-05-14 00:00 |
11:31:28.02 |
+25:59:09.7 |
HIP 56062 |
28.61 |
| 2026-05-14 12:00 |
11:31:24.14 |
+25:58:21.1 |
HIP 56062 |
27.58 |
| 2026-05-15 00:00 |
11:31:20.37 |
+25:57:31.7 |
HIP 56062 |
26.58 |
| 2026-05-15 12:00 |
11:31:16.72 |
+25:56:41.4 |
HIP 56062 |
25.63 |
| 2026-05-16 00:00 |
11:31:13.18 |
+25:55:50.4 |
HIP 56062 |
24.71 |
| 2026-05-16 12:00 |
11:31:09.76 |
+25:54:58.6 |
HIP 56062 |
23.85 |
| 2026-05-17 00:00 |
11:31:06.45 |
+25:54:06.0 |
HIP 56062 |
23.03 |
| 2026-05-17 12:00 |
11:31:03.26 |
+25:53:12.6 |
HIP 56062 |
22.27 |
| 2026-05-18 00:00 |
11:31:00.18 |
+25:52:18.4 |
HIP 56062 |
21.56 |
| 2026-05-18 12:00 |
11:30:57.21 |
+25:51:23.5 |
HIP 56062 |
20.92 |
| 2026-05-19 00:00 |
11:30:54.36 |
+25:50:27.9 |
HIP 56062 |
20.35 |
| 2026-05-19 12:00 |
11:30:51.63 |
+25:49:31.4 |
HIP 56062 |
19.86 |
| 2026-05-20 00:00 |
11:30:49.01 |
+25:48:34.3 |
HIP 56062 |
19.45 |
| 2026-05-20 12:00 |
11:30:46.51 |
+25:47:36.3 |
HIP 56062 |
19.12 |
| 2026-05-21 00:00 |
11:30:44.12 |
+25:46:37.7 |
HIP 56062 |
18.88 |
| 2026-05-21 12:00 |
11:30:41.85 |
+25:45:38.3 |
HIP 56164 |
18.58 |
| 2026-05-22 00:00 |
11:30:39.69 |
+25:44:38.2 |
HIP 56164 |
17.62 |
| 2026-05-22 12:00 |
11:30:37.65 |
+25:43:37.5 |
HIP 56164 |
16.66 |
| 2026-05-23 00:00 |
11:30:35.72 |
+25:42:36.0 |
HIP 56164 |
15.71 |
| 2026-05-23 12:00 |
11:30:33.91 |
+25:41:33.8 |
HIP 56164 |
14.76 |
| 2026-05-24 00:00 |
11:30:32.21 |
+25:40:30.9 |
HIP 56164 |
13.82 |
| 2026-05-24 12:00 |
11:30:30.63 |
+25:39:27.3 |
HIP 56164 |
12.90 |
| 2026-05-25 00:00 |
11:30:29.16 |
+25:38:23.1 |
HIP 56164 |
11.98 |
| 2026-05-25 12:00 |
11:30:27.80 |
+25:37:18.1 |
HIP 56164 |
11.08 |
| 2026-05-26 00:00 |
11:30:26.56 |
+25:36:12.6 |
HIP 56164 |
10.21 |
| 2026-05-26 12:00 |
11:30:25.43 |
+25:35:06.3 |
HIP 56164 |
9.36 |
| 2026-05-27 00:00 |
11:30:24.42 |
+25:33:59.5 |
HIP 56164 |
8.56 |
| 2026-05-27 12:00 |
11:30:23.52 |
+25:32:51.9 |
HIP 56164 |
7.82 |
| 2026-05-28 00:00 |
11:30:22.73 |
+25:31:43.8 |
HIP 56164 |
7.16 |
| 2026-05-28 12:00 |
11:30:22.05 |
+25:30:35.0 |
HIP 56164 |
6.61 |
| 2026-05-29 00:00 |
11:30:21.49 |
+25:29:25.5 |
HIP 56164 |
6.20 |
| 2026-05-29 12:00 |
11:30:21.04 |
+25:28:15.5 |
HIP 56164 |
5.96 |
| 2026-05-30 00:00 |
11:30:20.71 |
+25:27:04.8 |
HIP 56164 |
5.92 |
| 2026-05-30 12:00 |
11:30:20.48 |
+25:25:53.6 |
HIP 56164 |
6.09 |
| 2026-05-31 00:00 |
11:30:20.37 |
+25:24:41.7 |
HIP 56164 |
6.46 |
| 2026-05-31 12:00 |
11:30:20.37 |
+25:23:29.2 |
HIP 56111 |
6.03 |
| 2026-06-01 00:00 |
11:30:20.48 |
+25:22:16.2 |
HIP 56111 |
5.02 |
| 2026-06-01 12:00 |
11:30:20.70 |
+25:21:02.6 |
HIP 56111 |
4.13 |
| 2026-06-02 00:00 |
11:30:21.04 |
+25:19:48.4 |
HIP 56111 |
3.46 |