메타데이터
| 항목 |
값 |
| Designation |
C/1983 N1 (IRAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1983-05-02T16:52:11.812800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:31Z |
| Obs used |
19 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1983-12-26.0000000 |
| e |
0.99936962 |
| q (au) |
2.418058 |
| a (au) |
3835.864208 |
| i (deg) |
138.832959 |
| Ω (om, deg) |
171.801181 |
| ω (w, deg) |
265.589825 |
| M (ma, deg) |
0.000984 |
밝기
산란 + 전체 선형
$$
M_a = (15.018 + 2.142\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.018 |
| n |
2.142 |
| gf |
1.000 |
| gb |
-0.842 |
| k |
0.800 |
| 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) |
| 2026-06-01 00:00 |
08:27:49.58 |
+56:09:10.2 |
HIP 41544 |
27.23 |
| 2026-06-01 12:00 |
08:27:51.25 |
+56:08:55.1 |
HIP 41544 |
27.45 |
| 2026-06-02 00:00 |
08:27:52.94 |
+56:08:40.0 |
HIP 41544 |
27.66 |
| 2026-06-02 12:00 |
08:27:54.65 |
+56:08:25.0 |
HIP 41544 |
27.88 |
| 2026-06-03 00:00 |
08:27:56.38 |
+56:08:10.0 |
HIP 41544 |
28.10 |
| 2026-06-03 12:00 |
08:27:58.13 |
+56:07:55.1 |
HIP 41544 |
28.33 |
| 2026-06-04 00:00 |
08:27:59.90 |
+56:07:40.2 |
HIP 41544 |
28.55 |
| 2026-06-04 12:00 |
08:28:01.69 |
+56:07:25.4 |
HIP 41544 |
28.77 |
| 2026-06-05 00:00 |
08:28:03.50 |
+56:07:10.6 |
HIP 41544 |
29.00 |
| 2026-06-05 12:00 |
08:28:05.33 |
+56:06:55.9 |
HIP 41544 |
29.23 |
| 2026-06-06 00:00 |
08:28:07.17 |
+56:06:41.2 |
HIP 41544 |
29.46 |
| 2026-06-06 12:00 |
08:28:09.04 |
+56:06:26.6 |
HIP 41544 |
29.69 |
| 2026-06-07 00:00 |
08:28:10.92 |
+56:06:12.0 |
HIP 41544 |
29.92 |
| 2026-06-07 12:00 |
08:28:12.82 |
+56:05:57.5 |
HIP 41544 |
30.16 |
| 2026-06-08 00:00 |
08:28:14.74 |
+56:05:43.0 |
HIP 41544 |
30.39 |
| 2026-06-08 12:00 |
08:28:16.68 |
+56:05:28.6 |
HIP 41287 |
30.54 |
| 2026-06-09 00:00 |
08:28:18.64 |
+56:05:14.3 |
HIP 41287 |
30.61 |
| 2026-06-09 12:00 |
08:28:20.61 |
+56:05:00.0 |
HIP 41287 |
30.68 |
| 2026-06-10 00:00 |
08:28:22.61 |
+56:04:45.8 |
HIP 41287 |
30.77 |
| 2026-06-10 12:00 |
08:28:24.62 |
+56:04:31.6 |
HIP 41287 |
30.86 |
| 2026-06-11 00:00 |
08:28:26.65 |
+56:04:17.5 |
HIP 41287 |
30.95 |
| 2026-06-11 12:00 |
08:28:28.69 |
+56:04:03.5 |
HIP 41287 |
31.05 |
| 2026-06-12 00:00 |
08:28:30.75 |
+56:03:49.5 |
HIP 41287 |
31.16 |
| 2026-06-12 12:00 |
08:28:32.83 |
+56:03:35.6 |
HIP 41287 |
31.28 |
| 2026-06-13 00:00 |
08:28:34.93 |
+56:03:21.8 |
HIP 41835 |
31.21 |
| 2026-06-13 12:00 |
08:28:37.05 |
+56:03:08.0 |
HIP 41835 |
30.84 |
| 2026-06-14 00:00 |
08:28:39.18 |
+56:02:54.3 |
HIP 41835 |
30.46 |
| 2026-06-14 12:00 |
08:28:41.32 |
+56:02:40.7 |
HIP 41835 |
30.09 |
| 2026-06-15 00:00 |
08:28:43.49 |
+56:02:27.2 |
HIP 41835 |
29.71 |
| 2026-06-15 12:00 |
08:28:45.67 |
+56:02:13.7 |
HIP 41835 |
29.34 |
| 2026-06-16 00:00 |
08:28:47.86 |
+56:02:00.2 |
HIP 41835 |
28.96 |
| 2026-06-16 12:00 |
08:28:50.07 |
+56:01:46.9 |
HIP 41835 |
28.58 |
| 2026-06-17 00:00 |
08:28:52.30 |
+56:01:33.6 |
HIP 41835 |
28.20 |
| 2026-06-17 12:00 |
08:28:54.54 |
+56:01:20.4 |
HIP 41835 |
27.82 |
| 2026-06-18 00:00 |
08:28:56.80 |
+56:01:07.3 |
HIP 41835 |
27.43 |
| 2026-06-18 12:00 |
08:28:59.07 |
+56:00:54.3 |
HIP 41835 |
27.05 |
| 2026-06-19 00:00 |
08:29:01.36 |
+56:00:41.3 |
HIP 41835 |
26.66 |
| 2026-06-19 12:00 |
08:29:03.66 |
+56:00:28.5 |
HIP 41835 |
26.28 |
| 2026-06-20 00:00 |
08:29:05.98 |
+56:00:15.6 |
HIP 41835 |
25.89 |
| 2026-06-20 12:00 |
08:29:08.31 |
+56:00:02.9 |
HIP 41835 |
25.50 |
| 2026-06-21 00:00 |
08:29:10.65 |
+55:59:50.3 |
HIP 41835 |
25.11 |
| 2026-06-21 12:00 |
08:29:13.01 |
+55:59:37.7 |
HIP 41835 |
24.72 |
| 2026-06-22 00:00 |
08:29:15.38 |
+55:59:25.3 |
HIP 41835 |
24.33 |