메타데이터
| 항목 |
값 |
| Designation |
C/1974 F1 (Lovas) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1975-08-22T03:56:03.344640Z |
| Orbit solution date (soln_date, UTC) |
2023-08-28T01:42:36Z |
| Obs used |
137 |
| NEO |
- |
| M1 |
9.000 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1975-04-12.0000000 |
| e |
0.99979749 |
| q (au) |
3.011474 |
| a (au) |
14870.379859 |
| i (deg) |
50.648407 |
| Ω (om, deg) |
12.368086 |
| ω (w, deg) |
261.362838 |
| M (ma, deg) |
359.999928 |
밝기
산란 + 전체 선형
$$
M_a = (7.432 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
7.432 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.727 |
| k |
0.999 |
| 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) |
| 2026-03-26 00:00 |
02:33:19.16 |
+58:28:57.2 |
HIP 11870 |
1.84 |
| 2026-03-26 12:00 |
02:33:21.56 |
+58:28:52.5 |
HIP 11870 |
2.04 |
| 2026-03-27 00:00 |
02:33:23.97 |
+58:28:48.0 |
HIP 11870 |
2.27 |
| 2026-03-27 12:00 |
02:33:26.39 |
+58:28:43.5 |
HIP 11870 |
2.52 |
| 2026-03-28 00:00 |
02:33:28.82 |
+58:28:39.2 |
HIP 11870 |
2.79 |
| 2026-03-28 12:00 |
02:33:31.27 |
+58:28:35.1 |
HIP 11870 |
3.08 |
| 2026-03-29 00:00 |
02:33:33.73 |
+58:28:31.1 |
HIP 11870 |
3.37 |
| 2026-03-29 12:00 |
02:33:36.21 |
+58:28:27.2 |
HIP 11870 |
3.67 |
| 2026-03-30 00:00 |
02:33:38.70 |
+58:28:23.5 |
HIP 11870 |
3.98 |
| 2026-03-30 12:00 |
02:33:41.20 |
+58:28:19.9 |
HIP 11870 |
4.30 |
| 2026-03-31 00:00 |
02:33:43.71 |
+58:28:16.5 |
HIP 11870 |
4.61 |
| 2026-03-31 12:00 |
02:33:46.23 |
+58:28:13.2 |
HIP 11870 |
4.94 |
| 2026-04-01 00:00 |
02:33:48.77 |
+58:28:10.1 |
HIP 11953 |
4.85 |
| 2026-04-01 12:00 |
02:33:51.32 |
+58:28:07.1 |
HIP 11953 |
4.61 |
| 2026-04-02 00:00 |
02:33:53.88 |
+58:28:04.2 |
HIP 11953 |
4.39 |
| 2026-04-02 12:00 |
02:33:56.45 |
+58:28:01.5 |
HIP 11953 |
4.18 |
| 2026-04-03 00:00 |
02:33:59.03 |
+58:27:58.9 |
HIP 11953 |
4.00 |
| 2026-04-03 12:00 |
02:34:01.62 |
+58:27:56.5 |
HIP 11953 |
3.83 |
| 2026-04-04 00:00 |
02:34:04.23 |
+58:27:54.2 |
HIP 11953 |
3.70 |
| 2026-04-04 12:00 |
02:34:06.84 |
+58:27:52.0 |
HIP 11953 |
3.59 |
| 2026-04-05 00:00 |
02:34:09.47 |
+58:27:50.0 |
HIP 11953 |
3.51 |
| 2026-04-05 12:00 |
02:34:12.11 |
+58:27:48.2 |
HIP 11953 |
3.47 |
| 2026-04-06 00:00 |
02:34:14.75 |
+58:27:46.4 |
HIP 11953 |
3.47 |
| 2026-04-06 12:00 |
02:34:17.41 |
+58:27:44.9 |
HIP 11953 |
3.51 |
| 2026-04-07 00:00 |
02:34:20.08 |
+58:27:43.4 |
HIP 11953 |
3.58 |
| 2026-04-07 12:00 |
02:34:22.75 |
+58:27:42.1 |
HIP 11953 |
3.68 |
| 2026-04-08 00:00 |
02:34:25.44 |
+58:27:41.0 |
HIP 11953 |
3.82 |
| 2026-04-08 12:00 |
02:34:28.13 |
+58:27:40.0 |
HIP 11953 |
3.99 |
| 2026-04-09 00:00 |
02:34:30.84 |
+58:27:39.1 |
HIP 11953 |
4.18 |
| 2026-04-09 12:00 |
02:34:33.55 |
+58:27:38.4 |
HIP 11953 |
4.40 |
| 2026-04-10 00:00 |
02:34:36.27 |
+58:27:37.8 |
HIP 11953 |
4.63 |
| 2026-04-10 12:00 |
02:34:39.01 |
+58:27:37.4 |
HIP 11953 |
4.88 |
| 2026-04-11 00:00 |
02:34:41.75 |
+58:27:37.1 |
HIP 11953 |
5.15 |
| 2026-04-11 12:00 |
02:34:44.49 |
+58:27:37.0 |
HIP 11953 |
5.43 |
| 2026-04-12 00:00 |
02:34:47.25 |
+58:27:37.0 |
HIP 11953 |
5.72 |
| 2026-04-12 12:00 |
02:34:50.01 |
+58:27:37.1 |
HIP 11953 |
6.02 |
| 2026-04-13 00:00 |
02:34:52.79 |
+58:27:37.4 |
HIP 11953 |
6.33 |
| 2026-04-13 12:00 |
02:34:55.57 |
+58:27:37.9 |
HIP 11953 |
6.65 |
| 2026-04-14 00:00 |
02:34:58.35 |
+58:27:38.5 |
HIP 11953 |
6.98 |
| 2026-04-14 12:00 |
02:35:01.15 |
+58:27:39.2 |
HIP 11953 |
7.30 |
| 2026-04-15 00:00 |
02:35:03.95 |
+58:27:40.0 |
HIP 11953 |
7.64 |
| 2026-04-15 12:00 |
02:35:06.76 |
+58:27:41.1 |
HIP 11953 |
7.98 |
| 2026-04-16 00:00 |
02:35:09.57 |
+58:27:42.2 |
HIP 11953 |
8.32 |