메타데이터
| 항목 |
값 |
| Designation |
C/2002 H2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-03-23T09:48:55.414080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:15Z |
| Obs used |
369 |
| NEO |
- |
| M1 |
13.000 |
| K1 |
5.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2002-05-22.0000000 |
| e |
0.99406539 |
| q (au) |
1.634840 |
| a (au) |
275.475363 |
| i (deg) |
110.501113 |
| Ω (om, deg) |
269.002033 |
| ω (w, deg) |
20.419619 |
| M (ma, deg) |
0.012846 |
밝기
산란 + 전체 선형
$$
M_a = (11.548 + 3.263\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.548 |
| n |
3.263 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.000 |
| 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 |
05:59:52.80 |
+24:00:01.7 |
HIP 28273 |
20.06 |
| 2026-07-29 12:00 |
05:59:55.01 |
+24:00:00.4 |
HIP 28273 |
20.56 |
| 2026-07-30 00:00 |
05:59:57.21 |
+23:59:59.2 |
HIP 28273 |
21.06 |
| 2026-07-30 12:00 |
05:59:59.39 |
+23:59:58.0 |
HIP 28273 |
21.55 |
| 2026-07-31 00:00 |
06:00:01.56 |
+23:59:56.7 |
HIP 28273 |
22.04 |
| 2026-07-31 12:00 |
06:00:03.71 |
+23:59:55.5 |
HIP 28273 |
22.53 |
| 2026-08-01 00:00 |
06:00:05.85 |
+23:59:54.2 |
HIP 28273 |
23.02 |
| 2026-08-01 12:00 |
06:00:07.98 |
+23:59:53.0 |
HIP 28273 |
23.50 |
| 2026-08-02 00:00 |
06:00:10.09 |
+23:59:51.8 |
HIP 28273 |
23.98 |
| 2026-08-02 12:00 |
06:00:12.18 |
+23:59:50.5 |
HIP 28273 |
24.45 |
| 2026-08-03 00:00 |
06:00:14.27 |
+23:59:49.3 |
HIP 28273 |
24.93 |
| 2026-08-03 12:00 |
06:00:16.33 |
+23:59:48.1 |
HIP 28273 |
25.39 |
| 2026-08-04 00:00 |
06:00:18.38 |
+23:59:46.8 |
HIP 28597 |
25.68 |
| 2026-08-04 12:00 |
06:00:20.42 |
+23:59:45.6 |
HIP 28597 |
25.21 |
| 2026-08-05 00:00 |
06:00:22.44 |
+23:59:44.4 |
HIP 28597 |
24.75 |
| 2026-08-05 12:00 |
06:00:24.45 |
+23:59:43.1 |
HIP 28597 |
24.30 |
| 2026-08-06 00:00 |
06:00:26.44 |
+23:59:41.9 |
HIP 28597 |
23.85 |
| 2026-08-06 12:00 |
06:00:28.41 |
+23:59:40.7 |
HIP 28597 |
23.40 |
| 2026-08-07 00:00 |
06:00:30.37 |
+23:59:39.4 |
HIP 28597 |
22.95 |
| 2026-08-07 12:00 |
06:00:32.31 |
+23:59:38.2 |
HIP 28597 |
22.51 |
| 2026-08-08 00:00 |
06:00:34.24 |
+23:59:37.0 |
HIP 28597 |
22.08 |
| 2026-08-08 12:00 |
06:00:36.15 |
+23:59:35.7 |
HIP 28597 |
21.64 |
| 2026-08-09 00:00 |
06:00:38.04 |
+23:59:34.5 |
HIP 28597 |
21.21 |
| 2026-08-09 12:00 |
06:00:39.92 |
+23:59:33.3 |
HIP 28597 |
20.79 |
| 2026-08-10 00:00 |
06:00:41.78 |
+23:59:32.0 |
HIP 28597 |
20.37 |
| 2026-08-10 12:00 |
06:00:43.62 |
+23:59:30.8 |
HIP 28597 |
19.95 |
| 2026-08-11 00:00 |
06:00:45.45 |
+23:59:29.6 |
HIP 28597 |
19.54 |
| 2026-08-11 12:00 |
06:00:47.25 |
+23:59:28.4 |
HIP 28597 |
19.13 |
| 2026-08-12 00:00 |
06:00:49.04 |
+23:59:27.1 |
HIP 28597 |
18.72 |
| 2026-08-12 12:00 |
06:00:50.82 |
+23:59:25.9 |
HIP 28597 |
18.32 |
| 2026-08-13 00:00 |
06:00:52.57 |
+23:59:24.7 |
HIP 28597 |
17.92 |
| 2026-08-13 12:00 |
06:00:54.31 |
+23:59:23.5 |
HIP 28597 |
17.53 |
| 2026-08-14 00:00 |
06:00:56.03 |
+23:59:22.2 |
HIP 28597 |
17.14 |
| 2026-08-14 12:00 |
06:00:57.73 |
+23:59:21.0 |
HIP 28597 |
16.76 |
| 2026-08-15 00:00 |
06:00:59.41 |
+23:59:19.8 |
HIP 28597 |
16.38 |
| 2026-08-15 12:00 |
06:01:01.07 |
+23:59:18.6 |
HIP 28597 |
16.00 |
| 2026-08-16 00:00 |
06:01:02.72 |
+23:59:17.4 |
HIP 28597 |
15.63 |
| 2026-08-16 12:00 |
06:01:04.35 |
+23:59:16.1 |
HIP 28597 |
15.27 |
| 2026-08-17 00:00 |
06:01:05.95 |
+23:59:14.9 |
HIP 28597 |
14.90 |
| 2026-08-17 12:00 |
06:01:07.54 |
+23:59:13.7 |
HIP 28597 |
14.55 |
| 2026-08-18 00:00 |
06:01:09.11 |
+23:59:12.5 |
HIP 28597 |
14.19 |
| 2026-08-18 12:00 |
06:01:10.66 |
+23:59:11.3 |
HIP 28597 |
13.85 |
| 2026-08-19 00:00 |
06:01:12.19 |
+23:59:10.1 |
HIP 28597 |
13.50 |