메타데이터
| 항목 |
값 |
| Designation |
P/2017 D1 (Fuls) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-06-28T07:02:48.923520Z |
| Orbit solution date (soln_date, UTC) |
2022-07-31T01:43:22Z |
| Obs used |
77 |
| NEO |
- |
| M1 |
17.100 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-08-01.0000000 |
| e |
0.44033406 |
| q (au) |
2.687798 |
| a (au) |
4.802504 |
| i (deg) |
20.732652 |
| Ω (om, deg) |
82.335656 |
| ω (w, deg) |
7.257406 |
| M (ma, deg) |
3.156564 |
밝기
산란 + 전체 선형
$$
M_a = (12.648 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.648 |
| n |
6.000 |
| gf |
0.936 |
| gb |
-0.920 |
| k |
0.995 |
| δ90 |
8.212 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
05:13:05.07 |
+12:55:34.8 |
HIP 24181 |
27.25 |
| 2026-09-20 12:00 |
05:13:27.60 |
+12:57:05.5 |
HIP 24286 |
27.50 |
| 2026-09-21 00:00 |
05:13:49.89 |
+12:58:36.3 |
HIP 24527 |
28.22 |
| 2026-09-21 12:00 |
05:14:11.92 |
+13:00:07.3 |
HIP 24527 |
23.43 |
| 2026-09-22 00:00 |
05:14:33.69 |
+13:01:38.4 |
HIP 24527 |
19.12 |
| 2026-09-22 12:00 |
05:14:55.22 |
+13:03:09.6 |
HIP 24527 |
15.64 |
| 2026-09-23 00:00 |
05:15:16.48 |
+13:04:41.1 |
HIP 24527 |
13.57 |
| 2026-09-23 12:00 |
05:15:37.49 |
+13:06:12.6 |
HIP 24527 |
13.51 |
| 2026-09-24 00:00 |
05:15:58.23 |
+13:07:44.4 |
HIP 24527 |
15.40 |
| 2026-09-24 12:00 |
05:16:18.71 |
+13:09:16.4 |
HIP 24511 |
18.38 |
| 2026-09-25 00:00 |
05:16:38.93 |
+13:10:48.6 |
HIP 24511 |
21.13 |
| 2026-09-25 12:00 |
05:16:58.87 |
+13:12:21.0 |
HIP 24716 |
20.33 |
| 2026-09-26 00:00 |
05:17:18.55 |
+13:13:53.7 |
HIP 24716 |
15.73 |
| 2026-09-26 12:00 |
05:17:37.95 |
+13:15:26.7 |
HIP 24716 |
11.53 |
| 2026-09-27 00:00 |
05:17:57.08 |
+13:16:59.9 |
HIP 24716 |
8.25 |
| 2026-09-27 12:00 |
05:18:15.94 |
+13:18:33.4 |
HIP 24716 |
7.12 |
| 2026-09-28 00:00 |
05:18:34.51 |
+13:20:07.2 |
HIP 24716 |
8.90 |
| 2026-09-28 12:00 |
05:18:52.80 |
+13:21:41.3 |
HIP 24716 |
12.32 |
| 2026-09-29 00:00 |
05:19:10.81 |
+13:23:15.7 |
HIP 24789 |
11.61 |
| 2026-09-29 12:00 |
05:19:28.53 |
+13:24:50.5 |
HIP 24883 |
11.61 |
| 2026-09-30 00:00 |
05:19:45.96 |
+13:26:25.6 |
HIP 24883 |
7.61 |
| 2026-09-30 12:00 |
05:20:03.11 |
+13:28:01.1 |
HIP 24883 |
4.70 |
| 2026-10-01 00:00 |
05:20:19.96 |
+13:29:36.9 |
HIP 24883 |
5.04 |
| 2026-10-01 12:00 |
05:20:36.51 |
+13:31:13.2 |
HIP 24883 |
8.13 |
| 2026-10-02 00:00 |
05:20:52.76 |
+13:32:49.9 |
HIP 24883 |
11.94 |
| 2026-10-02 12:00 |
05:21:08.71 |
+13:34:27.0 |
HIP 24883 |
15.91 |
| 2026-10-03 00:00 |
05:21:24.36 |
+13:36:04.5 |
HIP 24883 |
19.91 |
| 2026-10-03 12:00 |
05:21:39.70 |
+13:37:42.5 |
HIP 24883 |
23.88 |
| 2026-10-04 00:00 |
05:21:54.74 |
+13:39:21.0 |
HIP 24883 |
27.80 |
| 2026-10-04 12:00 |
05:22:09.46 |
+13:41:00.0 |
HIP 25113 |
25.58 |
| 2026-10-05 00:00 |
05:22:23.86 |
+13:42:39.4 |
HIP 25113 |
23.32 |
| 2026-10-05 12:00 |
05:22:37.96 |
+13:44:19.4 |
HIP 25113 |
21.50 |
| 2026-10-06 00:00 |
05:22:51.73 |
+13:46:00.0 |
HIP 25113 |
20.22 |
| 2026-10-06 12:00 |
05:23:05.18 |
+13:47:41.0 |
HIP 25113 |
19.54 |
| 2026-10-07 00:00 |
05:23:18.31 |
+13:49:22.6 |
HIP 25113 |
19.49 |
| 2026-10-07 12:00 |
05:23:31.11 |
+13:51:04.8 |
HIP 25113 |
20.03 |
| 2026-10-08 00:00 |
05:23:43.58 |
+13:52:47.7 |
HIP 25113 |
21.10 |
| 2026-10-08 12:00 |
05:23:55.72 |
+13:54:31.1 |
HIP 25113 |
22.57 |
| 2026-10-09 00:00 |
05:24:07.53 |
+13:56:15.1 |
HIP 25113 |
24.36 |
| 2026-10-09 12:00 |
05:24:19.01 |
+13:57:59.9 |
HIP 25275 |
25.28 |
| 2026-10-10 00:00 |
05:24:30.15 |
+13:59:45.2 |
HIP 25275 |
23.65 |
| 2026-10-10 12:00 |
05:24:40.95 |
+14:01:31.3 |
HIP 25275 |
22.33 |
| 2026-10-11 00:00 |
05:24:51.41 |
+14:03:18.0 |
HIP 25275 |
21.36 |