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) |
| 2026-06-01 00:00 |
07:50:28.06 |
+22:36:37.3 |
HIP 38247 |
8.78 |
| 2026-06-01 12:00 |
07:50:49.87 |
+22:35:52.8 |
HIP 38247 |
12.77 |
| 2026-06-02 00:00 |
07:51:11.78 |
+22:35:08.0 |
HIP 38247 |
17.36 |
| 2026-06-02 12:00 |
07:51:33.78 |
+22:34:22.7 |
HIP 38492 |
19.85 |
| 2026-06-03 00:00 |
07:51:55.87 |
+22:33:37.0 |
HIP 38492 |
14.73 |
| 2026-06-03 12:00 |
07:52:18.06 |
+22:32:50.9 |
HIP 38492 |
9.62 |
| 2026-06-04 00:00 |
07:52:40.34 |
+22:32:04.4 |
HIP 38492 |
4.65 |
| 2026-06-04 12:00 |
07:53:02.72 |
+22:31:17.4 |
HIP 38492 |
2.22 |
| 2026-06-05 00:00 |
07:53:25.18 |
+22:30:30.1 |
HIP 38492 |
6.56 |
| 2026-06-05 12:00 |
07:53:47.73 |
+22:29:42.3 |
HIP 38492 |
11.70 |
| 2026-06-06 00:00 |
07:54:10.38 |
+22:28:54.2 |
HIP 38492 |
16.94 |
| 2026-06-06 12:00 |
07:54:33.11 |
+22:28:05.6 |
HIP 38492 |
22.22 |
| 2026-06-07 00:00 |
07:54:55.93 |
+22:27:16.6 |
HIP 38785 |
20.58 |
| 2026-06-07 12:00 |
07:55:18.84 |
+22:26:27.2 |
HIP 38785 |
16.10 |
| 2026-06-08 00:00 |
07:55:41.83 |
+22:25:37.4 |
HIP 38785 |
12.33 |
| 2026-06-08 12:00 |
07:56:04.91 |
+22:24:47.2 |
HIP 38785 |
10.13 |
| 2026-06-09 00:00 |
07:56:28.07 |
+22:23:56.5 |
HIP 38785 |
10.56 |
| 2026-06-09 12:00 |
07:56:51.32 |
+22:23:05.5 |
HIP 38785 |
13.40 |
| 2026-06-10 00:00 |
07:57:14.65 |
+22:22:14.0 |
HIP 38785 |
17.53 |
| 2026-06-10 12:00 |
07:57:38.07 |
+22:21:22.1 |
HIP 38785 |
22.27 |
| 2026-06-11 00:00 |
07:58:01.56 |
+22:20:29.8 |
HIP 38785 |
27.30 |
| 2026-06-11 12:00 |
07:58:25.14 |
+22:19:37.1 |
HIP 38785 |
32.50 |
| 2026-06-12 00:00 |
07:58:48.79 |
+22:18:44.0 |
HIP 39223 |
35.62 |
| 2026-06-12 12:00 |
07:59:12.53 |
+22:17:50.5 |
HIP 39223 |
30.25 |
| 2026-06-13 00:00 |
07:59:36.35 |
+22:16:56.6 |
HIP 39223 |
24.94 |
| 2026-06-13 12:00 |
08:00:00.24 |
+22:16:02.3 |
HIP 39223 |
19.77 |
| 2026-06-14 00:00 |
08:00:24.21 |
+22:15:07.5 |
HIP 39223 |
14.89 |
| 2026-06-14 12:00 |
08:00:48.25 |
+22:14:12.4 |
HIP 39223 |
10.75 |
| 2026-06-15 00:00 |
08:01:12.37 |
+22:13:16.8 |
HIP 39223 |
8.54 |
| 2026-06-15 12:00 |
08:01:36.57 |
+22:12:20.9 |
HIP 39223 |
9.72 |
| 2026-06-16 00:00 |
08:02:00.83 |
+22:11:24.5 |
HIP 39223 |
13.45 |
| 2026-06-16 12:00 |
08:02:25.17 |
+22:10:27.8 |
HIP 39344 |
18.24 |
| 2026-06-17 00:00 |
08:02:49.58 |
+22:09:30.6 |
HIP 39447 |
15.06 |
| 2026-06-17 12:00 |
08:03:14.06 |
+22:08:33.1 |
HIP 39447 |
9.47 |
| 2026-06-18 00:00 |
08:03:38.61 |
+22:07:35.1 |
HIP 39447 |
4.33 |
| 2026-06-18 12:00 |
08:04:03.23 |
+22:06:36.8 |
HIP 39447 |
3.78 |
| 2026-06-19 00:00 |
08:04:27.92 |
+22:05:38.0 |
HIP 39447 |
8.78 |
| 2026-06-19 12:00 |
08:04:52.67 |
+22:04:38.9 |
HIP 39447 |
14.41 |
| 2026-06-20 00:00 |
08:05:17.49 |
+22:03:39.4 |
HIP 39447 |
20.16 |
| 2026-06-20 12:00 |
08:05:42.38 |
+22:02:39.4 |
HIP 39447 |
25.97 |
| 2026-06-21 00:00 |
08:06:07.32 |
+22:01:39.1 |
HIP 39681 |
26.52 |
| 2026-06-21 12:00 |
08:06:32.34 |
+22:00:38.5 |
HIP 39681 |
26.78 |
| 2026-06-22 00:00 |
08:06:57.41 |
+21:59:37.4 |
HIP 39780 |
27.14 |