메타데이터
| 항목 |
값 |
| Designation |
C/1892 E1 (Swift) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1892-04-07T03:44:20.731200Z |
| Orbit solution date (soln_date, UTC) |
2023-10-09T20:36:13Z |
| Obs used |
53 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1892-07-27.0000000 |
| e |
0.99880065 |
| q (au) |
1.026893 |
| a (au) |
856.207621 |
| i (deg) |
38.700724 |
| Ω (om, deg) |
242.428343 |
| ω (w, deg) |
24.504179 |
| M (ma, deg) |
0.004361 |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
04:58:37.45 |
+12:55:39.7 |
HIP 23163 |
5.81 |
| 2026-07-29 12:00 |
04:58:37.98 |
+12:55:38.8 |
HIP 23163 |
5.69 |
| 2026-07-30 00:00 |
04:58:38.51 |
+12:55:37.9 |
HIP 23163 |
5.58 |
| 2026-07-30 12:00 |
04:58:39.04 |
+12:55:37.0 |
HIP 23163 |
5.46 |
| 2026-07-31 00:00 |
04:58:39.56 |
+12:55:36.1 |
HIP 23163 |
5.35 |
| 2026-07-31 12:00 |
04:58:40.08 |
+12:55:35.2 |
HIP 23163 |
5.24 |
| 2026-08-01 00:00 |
04:58:40.59 |
+12:55:34.3 |
HIP 23163 |
5.13 |
| 2026-08-01 12:00 |
04:58:41.09 |
+12:55:33.3 |
HIP 23163 |
5.03 |
| 2026-08-02 00:00 |
04:58:41.59 |
+12:55:32.3 |
HIP 23163 |
4.92 |
| 2026-08-02 12:00 |
04:58:42.08 |
+12:55:31.3 |
HIP 23163 |
4.82 |
| 2026-08-03 00:00 |
04:58:42.57 |
+12:55:30.3 |
HIP 23163 |
4.72 |
| 2026-08-03 12:00 |
04:58:43.05 |
+12:55:29.2 |
HIP 23163 |
4.63 |
| 2026-08-04 00:00 |
04:58:43.53 |
+12:55:28.2 |
HIP 23163 |
4.53 |
| 2026-08-04 12:00 |
04:58:44.00 |
+12:55:27.1 |
HIP 23163 |
4.44 |
| 2026-08-05 00:00 |
04:58:44.46 |
+12:55:26.0 |
HIP 23163 |
4.35 |
| 2026-08-05 12:00 |
04:58:44.92 |
+12:55:24.9 |
HIP 23163 |
4.27 |
| 2026-08-06 00:00 |
04:58:45.37 |
+12:55:23.8 |
HIP 23163 |
4.18 |
| 2026-08-06 12:00 |
04:58:45.82 |
+12:55:22.6 |
HIP 23163 |
4.10 |
| 2026-08-07 00:00 |
04:58:46.26 |
+12:55:21.4 |
HIP 23163 |
4.02 |
| 2026-08-07 12:00 |
04:58:46.70 |
+12:55:20.2 |
HIP 23163 |
3.95 |
| 2026-08-08 00:00 |
04:58:47.13 |
+12:55:19.0 |
HIP 23163 |
3.88 |
| 2026-08-08 12:00 |
04:58:47.55 |
+12:55:17.8 |
HIP 23163 |
3.81 |
| 2026-08-09 00:00 |
04:58:47.97 |
+12:55:16.5 |
HIP 23163 |
3.74 |
| 2026-08-09 12:00 |
04:58:48.38 |
+12:55:15.3 |
HIP 23163 |
3.68 |
| 2026-08-10 00:00 |
04:58:48.78 |
+12:55:14.0 |
HIP 23163 |
3.62 |
| 2026-08-10 12:00 |
04:58:49.18 |
+12:55:12.7 |
HIP 23163 |
3.56 |
| 2026-08-11 00:00 |
04:58:49.57 |
+12:55:11.4 |
HIP 23163 |
3.50 |
| 2026-08-11 12:00 |
04:58:49.96 |
+12:55:10.0 |
HIP 23163 |
3.45 |
| 2026-08-12 00:00 |
04:58:50.34 |
+12:55:08.7 |
HIP 23163 |
3.41 |
| 2026-08-12 12:00 |
04:58:50.72 |
+12:55:07.3 |
HIP 23163 |
3.36 |
| 2026-08-13 00:00 |
04:58:51.08 |
+12:55:05.9 |
HIP 23163 |
3.32 |
| 2026-08-13 12:00 |
04:58:51.44 |
+12:55:04.5 |
HIP 23163 |
3.28 |
| 2026-08-14 00:00 |
04:58:51.80 |
+12:55:03.1 |
HIP 23163 |
3.25 |
| 2026-08-14 12:00 |
04:58:52.15 |
+12:55:01.6 |
HIP 23163 |
3.22 |
| 2026-08-15 00:00 |
04:58:52.49 |
+12:55:00.2 |
HIP 23163 |
3.19 |
| 2026-08-15 12:00 |
04:58:52.82 |
+12:54:58.7 |
HIP 23163 |
3.17 |
| 2026-08-16 00:00 |
04:58:53.15 |
+12:54:57.2 |
HIP 23163 |
3.14 |
| 2026-08-16 12:00 |
04:58:53.48 |
+12:54:55.7 |
HIP 23163 |
3.13 |
| 2026-08-17 00:00 |
04:58:53.79 |
+12:54:54.1 |
HIP 23163 |
3.11 |
| 2026-08-17 12:00 |
04:58:54.10 |
+12:54:52.6 |
HIP 23163 |
3.10 |
| 2026-08-18 00:00 |
04:58:54.40 |
+12:54:51.0 |
HIP 23163 |
3.09 |
| 2026-08-18 12:00 |
04:58:54.70 |
+12:54:49.5 |
HIP 23163 |
3.08 |
| 2026-08-19 00:00 |
04:58:54.99 |
+12:54:47.9 |
HIP 23163 |
3.08 |