메타데이터
| 항목 |
값 |
| Designation |
98P/Takamizawa |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-08-05T11:26:09.798720Z |
| Orbit solution date (soln_date, UTC) |
2021-06-02T08:41:36Z |
| Obs used |
558 |
| NEO |
- |
| M1 |
14.600 |
| K1 |
8.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2011-12-20.0000000 |
| e |
0.56058596 |
| q (au) |
1.672338 |
| a (au) |
3.805837 |
| i (deg) |
10.545980 |
| Ω (om, deg) |
114.752675 |
| ω (w, deg) |
157.947415 |
| M (ma, deg) |
281.084281 |
밝기
산란 + 전체 선형
$$
M_a = (14.094 + 5.937\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.094 |
| n |
5.937 |
| gf |
1.000 |
| gb |
-0.737 |
| 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) |
| 2026-07-29 00:00 |
08:39:58.62 |
+20:27:54.5 |
HIP 42628 |
17.98 |
| 2026-07-29 12:00 |
08:40:26.46 |
+20:26:28.5 |
HIP 42628 |
11.64 |
| 2026-07-30 00:00 |
08:40:54.31 |
+20:25:02.3 |
HIP 42628 |
6.08 |
| 2026-07-30 12:00 |
08:41:22.18 |
+20:23:35.8 |
HIP 42628 |
5.27 |
| 2026-07-31 00:00 |
08:41:50.05 |
+20:22:09.1 |
HIP 42628 |
10.39 |
| 2026-07-31 12:00 |
08:42:17.94 |
+20:20:42.1 |
HIP 42628 |
16.67 |
| 2026-08-01 00:00 |
08:42:45.84 |
+20:19:14.9 |
HIP 42628 |
23.19 |
| 2026-08-01 12:00 |
08:43:13.75 |
+20:17:47.4 |
HIP 42628 |
29.79 |
| 2026-08-02 00:00 |
08:43:41.67 |
+20:16:19.7 |
HIP 42966 |
26.06 |
| 2026-08-02 12:00 |
08:44:09.60 |
+20:14:51.8 |
HIP 42966 |
20.46 |
| 2026-08-03 00:00 |
08:44:37.53 |
+20:13:23.6 |
HIP 42966 |
15.76 |
| 2026-08-03 12:00 |
08:45:05.48 |
+20:11:55.2 |
HIP 42966 |
12.96 |
| 2026-08-04 00:00 |
08:45:33.43 |
+20:10:26.5 |
HIP 43004 |
9.90 |
| 2026-08-04 12:00 |
08:46:01.39 |
+20:08:57.6 |
HIP 43004 |
8.07 |
| 2026-08-05 00:00 |
08:46:29.35 |
+20:07:28.5 |
HIP 43004 |
11.08 |
| 2026-08-05 12:00 |
08:46:57.32 |
+20:05:59.2 |
HIP 43004 |
16.47 |
| 2026-08-06 00:00 |
08:47:25.30 |
+20:04:29.7 |
HIP 43004 |
22.59 |
| 2026-08-06 12:00 |
08:47:53.28 |
+20:02:59.9 |
HIP 43254 |
20.62 |
| 2026-08-07 00:00 |
08:48:21.27 |
+20:01:29.9 |
HIP 43254 |
19.35 |
| 2026-08-07 12:00 |
08:48:49.26 |
+19:59:59.7 |
HIP 43254 |
20.36 |
| 2026-08-08 00:00 |
08:49:17.25 |
+19:58:29.3 |
HIP 43254 |
23.36 |
| 2026-08-08 12:00 |
08:49:45.24 |
+19:56:58.7 |
HIP 43254 |
27.71 |
| 2026-08-09 00:00 |
08:50:13.24 |
+19:55:27.9 |
HIP 43552 |
30.64 |
| 2026-08-09 12:00 |
08:50:41.24 |
+19:53:56.9 |
HIP 43552 |
25.70 |
| 2026-08-10 00:00 |
08:51:09.23 |
+19:52:25.7 |
HIP 43552 |
21.75 |
| 2026-08-10 12:00 |
08:51:37.23 |
+19:50:54.3 |
HIP 43552 |
19.42 |
| 2026-08-11 00:00 |
08:52:05.23 |
+19:49:22.7 |
HIP 43552 |
19.30 |
| 2026-08-11 12:00 |
08:52:33.22 |
+19:47:51.0 |
HIP 43552 |
21.42 |
| 2026-08-12 00:00 |
08:53:01.21 |
+19:46:19.0 |
HIP 43683 |
17.30 |
| 2026-08-12 12:00 |
08:53:29.20 |
+19:44:46.9 |
HIP 43683 |
14.60 |
| 2026-08-13 00:00 |
08:53:57.18 |
+19:43:14.6 |
HIP 43722 |
9.65 |
| 2026-08-13 12:00 |
08:54:25.16 |
+19:41:42.2 |
HIP 43722 |
7.58 |
| 2026-08-14 00:00 |
08:54:53.13 |
+19:40:09.6 |
HIP 43722 |
10.65 |
| 2026-08-14 12:00 |
08:55:21.10 |
+19:38:36.8 |
HIP 43722 |
16.15 |
| 2026-08-15 00:00 |
08:55:49.06 |
+19:37:03.9 |
HIP 43905 |
18.36 |
| 2026-08-15 12:00 |
08:56:17.01 |
+19:35:30.8 |
HIP 43905 |
16.37 |
| 2026-08-16 00:00 |
08:56:44.96 |
+19:33:57.6 |
HIP 43905 |
17.03 |
| 2026-08-16 12:00 |
08:57:12.89 |
+19:32:24.3 |
HIP 44022 |
18.31 |
| 2026-08-17 00:00 |
08:57:40.82 |
+19:30:50.8 |
HIP 44022 |
14.21 |
| 2026-08-17 12:00 |
08:58:08.74 |
+19:29:17.2 |
HIP 44022 |
12.65 |
| 2026-08-18 00:00 |
08:58:36.64 |
+19:27:43.4 |
HIP 44022 |
14.47 |
| 2026-08-18 12:00 |
08:59:04.53 |
+19:26:09.5 |
HIP 44022 |
18.72 |
| 2026-08-19 00:00 |
08:59:32.42 |
+19:24:35.5 |
HIP 44022 |
24.14 |