메타데이터
| 항목 |
값 |
| Designation |
126P/IRAS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-07-05T08:31:56.219520Z |
| Orbit solution date (soln_date, UTC) |
2025-10-30T09:34:36Z |
| Obs used |
1717 |
| NEO |
- |
| M1 |
11.800 |
| K1 |
11.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-05-27.0000000 |
| e |
0.69627539 |
| q (au) |
1.713008 |
| a (au) |
5.640004 |
| i (deg) |
45.869371 |
| Ω (om, deg) |
357.862226 |
| ω (w, deg) |
356.523683 |
| M (ma, deg) |
303.387535 |
밝기
산란 + 전체 선형
$$
M_a = (10.785 + 5.260\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.785 |
| n |
5.260 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.992 |
| 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) |
| 2026-07-29 00:00 |
10:43:11.82 |
+29:45:55.4 |
HIP 52442 |
22.85 |
| 2026-07-29 12:00 |
10:43:26.24 |
+29:43:28.6 |
HIP 52442 |
20.65 |
| 2026-07-30 00:00 |
10:43:40.71 |
+29:41:02.1 |
HIP 52569 |
18.99 |
| 2026-07-30 12:00 |
10:43:55.22 |
+29:38:35.9 |
HIP 52569 |
15.03 |
| 2026-07-31 00:00 |
10:44:09.77 |
+29:36:10.0 |
HIP 52569 |
11.08 |
| 2026-07-31 12:00 |
10:44:24.36 |
+29:33:44.3 |
HIP 52569 |
7.17 |
| 2026-08-01 00:00 |
10:44:38.98 |
+29:31:19.0 |
HIP 52569 |
3.44 |
| 2026-08-01 12:00 |
10:44:53.64 |
+29:28:53.9 |
HIP 52569 |
2.03 |
| 2026-08-02 00:00 |
10:45:08.34 |
+29:26:29.2 |
HIP 52569 |
5.34 |
| 2026-08-02 12:00 |
10:45:23.07 |
+29:24:04.7 |
HIP 52569 |
9.22 |
| 2026-08-03 00:00 |
10:45:37.84 |
+29:21:40.6 |
HIP 52569 |
13.18 |
| 2026-08-03 12:00 |
10:45:52.64 |
+29:19:16.7 |
HIP 52569 |
17.17 |
| 2026-08-04 00:00 |
10:46:07.48 |
+29:16:53.2 |
HIP 52569 |
21.18 |
| 2026-08-04 12:00 |
10:46:22.35 |
+29:14:29.9 |
HIP 52569 |
25.19 |
| 2026-08-05 00:00 |
10:46:37.25 |
+29:12:07.0 |
HIP 52569 |
29.21 |
| 2026-08-05 12:00 |
10:46:52.19 |
+29:09:44.4 |
HIP 52882 |
31.24 |
| 2026-08-06 00:00 |
10:47:07.16 |
+29:07:22.1 |
HIP 52882 |
29.77 |
| 2026-08-06 12:00 |
10:47:22.15 |
+29:05:00.2 |
HIP 52882 |
28.80 |
| 2026-08-07 00:00 |
10:47:37.18 |
+29:02:38.5 |
HIP 52882 |
28.35 |
| 2026-08-07 12:00 |
10:47:52.24 |
+29:00:17.2 |
HIP 52882 |
28.47 |
| 2026-08-08 00:00 |
10:48:07.33 |
+28:57:56.2 |
HIP 52882 |
29.15 |
| 2026-08-08 12:00 |
10:48:22.45 |
+28:55:35.6 |
HIP 52882 |
30.34 |
| 2026-08-09 00:00 |
10:48:37.59 |
+28:53:15.3 |
HIP 52882 |
32.00 |
| 2026-08-09 12:00 |
10:48:52.76 |
+28:50:55.3 |
HIP 52771 |
33.31 |
| 2026-08-10 00:00 |
10:49:07.96 |
+28:48:35.7 |
HIP 53066 |
31.97 |
| 2026-08-10 12:00 |
10:49:23.18 |
+28:46:16.4 |
HIP 53066 |
29.77 |
| 2026-08-11 00:00 |
10:49:38.43 |
+28:43:57.5 |
HIP 53066 |
27.97 |
| 2026-08-11 12:00 |
10:49:53.71 |
+28:41:39.0 |
HIP 53066 |
26.67 |
| 2026-08-12 00:00 |
10:50:09.01 |
+28:39:20.8 |
HIP 53066 |
25.94 |
| 2026-08-12 12:00 |
10:50:24.33 |
+28:37:02.9 |
HIP 53066 |
25.82 |
| 2026-08-13 00:00 |
10:50:39.67 |
+28:34:45.5 |
HIP 53066 |
26.33 |
| 2026-08-13 12:00 |
10:50:55.04 |
+28:32:28.4 |
HIP 53066 |
27.44 |
| 2026-08-14 00:00 |
10:51:10.42 |
+28:30:11.6 |
HIP 53189 |
28.33 |
| 2026-08-14 12:00 |
10:51:25.83 |
+28:27:55.3 |
HIP 53189 |
24.30 |
| 2026-08-15 00:00 |
10:51:41.25 |
+28:25:39.3 |
HIP 53189 |
20.29 |
| 2026-08-15 12:00 |
10:51:56.70 |
+28:23:23.8 |
HIP 53189 |
16.31 |
| 2026-08-16 00:00 |
10:52:12.16 |
+28:21:08.6 |
HIP 53189 |
12.40 |
| 2026-08-16 12:00 |
10:52:27.64 |
+28:18:53.8 |
HIP 53189 |
8.66 |
| 2026-08-17 00:00 |
10:52:43.14 |
+28:16:39.4 |
HIP 53189 |
5.44 |
| 2026-08-17 12:00 |
10:52:58.65 |
+28:14:25.4 |
HIP 53189 |
4.18 |
| 2026-08-18 00:00 |
10:53:14.18 |
+28:12:11.8 |
HIP 53247 |
3.30 |
| 2026-08-18 12:00 |
10:53:29.72 |
+28:09:58.6 |
HIP 53247 |
0.79 |
| 2026-08-19 00:00 |
10:53:45.28 |
+28:07:45.8 |
HIP 53247 |
4.87 |