메타데이터
| 항목 |
값 |
| Designation |
C/1998 H1 (Stonehouse) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1998-04-14T10:13:23.263680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:53Z |
| Obs used |
407 |
| NEO |
- |
| M1 |
10.000 |
| K1 |
9.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1998-05-13.0000000 |
| e |
0.99794041 |
| q (au) |
1.487291 |
| a (au) |
722.129549 |
| i (deg) |
104.692960 |
| Ω (om, deg) |
222.109070 |
| ω (w, deg) |
1.325283 |
| M (ma, deg) |
0.001451 |
밝기
산란 + 전체 선형
$$
M_a = (11.349 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.349 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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 |
02:30:45.44 |
+33:02:39.1 |
HIP 11635 |
23.16 |
| 2026-03-26 12:00 |
02:30:47.61 |
+33:02:40.1 |
HIP 11635 |
23.30 |
| 2026-03-27 00:00 |
02:30:49.80 |
+33:02:41.2 |
HIP 11635 |
23.46 |
| 2026-03-27 12:00 |
02:30:51.99 |
+33:02:42.4 |
HIP 11635 |
23.62 |
| 2026-03-28 00:00 |
02:30:54.20 |
+33:02:43.7 |
HIP 11635 |
23.78 |
| 2026-03-28 12:00 |
02:30:56.42 |
+33:02:45.2 |
HIP 11635 |
23.95 |
| 2026-03-29 00:00 |
02:30:58.65 |
+33:02:46.8 |
HIP 11635 |
24.13 |
| 2026-03-29 12:00 |
02:31:00.89 |
+33:02:48.5 |
HIP 11635 |
24.32 |
| 2026-03-30 00:00 |
02:31:03.15 |
+33:02:50.3 |
HIP 11635 |
24.52 |
| 2026-03-30 12:00 |
02:31:05.41 |
+33:02:52.3 |
HIP 11635 |
24.72 |
| 2026-03-31 00:00 |
02:31:07.69 |
+33:02:54.3 |
HIP 11635 |
24.92 |
| 2026-03-31 12:00 |
02:31:09.97 |
+33:02:56.5 |
HIP 11635 |
25.14 |
| 2026-04-01 00:00 |
02:31:12.27 |
+33:02:58.9 |
HIP 11635 |
25.36 |
| 2026-04-01 12:00 |
02:31:14.58 |
+33:03:01.3 |
HIP 11635 |
25.59 |
| 2026-04-02 00:00 |
02:31:16.90 |
+33:03:03.9 |
HIP 11635 |
25.82 |
| 2026-04-02 12:00 |
02:31:19.23 |
+33:03:06.6 |
HIP 11635 |
26.06 |
| 2026-04-03 00:00 |
02:31:21.56 |
+33:03:09.4 |
HIP 11635 |
26.31 |
| 2026-04-03 12:00 |
02:31:23.91 |
+33:03:12.3 |
HIP 11635 |
26.56 |
| 2026-04-04 00:00 |
02:31:26.27 |
+33:03:15.4 |
HIP 11635 |
26.82 |
| 2026-04-04 12:00 |
02:31:28.64 |
+33:03:18.6 |
HIP 11635 |
27.09 |
| 2026-04-05 00:00 |
02:31:31.02 |
+33:03:21.9 |
HIP 11635 |
27.36 |
| 2026-04-05 12:00 |
02:31:33.40 |
+33:03:25.3 |
HIP 11635 |
27.64 |
| 2026-04-06 00:00 |
02:31:35.80 |
+33:03:28.8 |
HIP 11635 |
27.93 |
| 2026-04-06 12:00 |
02:31:38.20 |
+33:03:32.5 |
HIP 11635 |
28.22 |
| 2026-04-07 00:00 |
02:31:40.62 |
+33:03:36.2 |
HIP 11635 |
28.51 |
| 2026-04-07 12:00 |
02:31:43.04 |
+33:03:40.1 |
HIP 11635 |
28.82 |
| 2026-04-08 00:00 |
02:31:45.47 |
+33:03:44.1 |
HIP 11635 |
29.12 |
| 2026-04-08 12:00 |
02:31:47.91 |
+33:03:48.3 |
HIP 11635 |
29.44 |
| 2026-04-09 00:00 |
02:31:50.36 |
+33:03:52.5 |
HIP 11635 |
29.76 |
| 2026-04-09 12:00 |
02:31:52.81 |
+33:03:56.9 |
HIP 11635 |
30.08 |
| 2026-04-10 00:00 |
02:31:55.27 |
+33:04:01.3 |
HIP 11635 |
30.41 |
| 2026-04-10 12:00 |
02:31:57.74 |
+33:04:05.9 |
HIP 11635 |
30.75 |
| 2026-04-11 00:00 |
02:32:00.22 |
+33:04:10.6 |
HIP 11635 |
31.08 |
| 2026-04-11 12:00 |
02:32:02.71 |
+33:04:15.5 |
HIP 11635 |
31.43 |
| 2026-04-12 00:00 |
02:32:05.20 |
+33:04:20.4 |
HIP 11635 |
31.78 |
| 2026-04-12 12:00 |
02:32:07.70 |
+33:04:25.4 |
HIP 11635 |
32.13 |
| 2026-04-13 00:00 |
02:32:10.20 |
+33:04:30.6 |
HIP 11635 |
32.49 |
| 2026-04-13 12:00 |
02:32:12.72 |
+33:04:35.9 |
HIP 11635 |
32.86 |
| 2026-04-14 00:00 |
02:32:15.24 |
+33:04:41.2 |
HIP 11635 |
33.23 |
| 2026-04-14 12:00 |
02:32:17.76 |
+33:04:46.7 |
HIP 11635 |
33.60 |
| 2026-04-15 00:00 |
02:32:20.29 |
+33:04:52.3 |
HIP 11635 |
33.98 |
| 2026-04-15 12:00 |
02:32:22.83 |
+33:04:58.1 |
HIP 11635 |
34.36 |
| 2026-04-16 00:00 |
02:32:25.37 |
+33:05:03.9 |
HIP 11635 |
34.74 |