메타데이터
| 항목 |
값 |
| Designation |
C/1999 H3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-08-18T05:16:31.920960Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:59Z |
| Obs used |
847 |
| NEO |
- |
| M1 |
10.300 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2000-02-08.0000000 |
| e |
1.00296415 |
| q (au) |
3.500834 |
| a (au) |
-1181.056590 |
| i (deg) |
115.837319 |
| Ω (om, deg) |
332.729392 |
| ω (w, deg) |
101.910427 |
| M (ma, deg) |
0.004220 |
밝기
산란 + 전체 선형
$$
M_a = (5.667 + 4.199\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.667 |
| n |
4.199 |
| gf |
0.907 |
| gb |
-0.935 |
| 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) |
| 2026-06-01 00:00 |
06:28:55.92 |
-33:47:51.5 |
HIP 30929 |
18.98 |
| 2026-06-01 12:00 |
06:28:58.41 |
-33:47:39.6 |
HIP 30929 |
18.99 |
| 2026-06-02 00:00 |
06:29:00.91 |
-33:47:28.0 |
HIP 30929 |
19.02 |
| 2026-06-02 12:00 |
06:29:03.42 |
-33:47:16.6 |
HIP 30929 |
19.06 |
| 2026-06-03 00:00 |
06:29:05.94 |
-33:47:05.4 |
HIP 30929 |
19.10 |
| 2026-06-03 12:00 |
06:29:08.47 |
-33:46:54.5 |
HIP 30929 |
19.16 |
| 2026-06-04 00:00 |
06:29:11.01 |
-33:46:43.8 |
HIP 30929 |
19.24 |
| 2026-06-04 12:00 |
06:29:13.56 |
-33:46:33.4 |
HIP 30929 |
19.32 |
| 2026-06-05 00:00 |
06:29:16.11 |
-33:46:23.2 |
HIP 30929 |
19.41 |
| 2026-06-05 12:00 |
06:29:18.68 |
-33:46:13.2 |
HIP 30929 |
19.52 |
| 2026-06-06 00:00 |
06:29:21.26 |
-33:46:03.5 |
HIP 30929 |
19.64 |
| 2026-06-06 12:00 |
06:29:23.84 |
-33:45:54.0 |
HIP 30929 |
19.77 |
| 2026-06-07 00:00 |
06:29:26.43 |
-33:45:44.8 |
HIP 30929 |
19.90 |
| 2026-06-07 12:00 |
06:29:29.04 |
-33:45:35.8 |
HIP 30929 |
20.05 |
| 2026-06-08 00:00 |
06:29:31.65 |
-33:45:27.1 |
HIP 30929 |
20.21 |
| 2026-06-08 12:00 |
06:29:34.26 |
-33:45:18.6 |
HIP 30929 |
20.38 |
| 2026-06-09 00:00 |
06:29:36.89 |
-33:45:10.4 |
HIP 30929 |
20.56 |
| 2026-06-09 12:00 |
06:29:39.52 |
-33:45:02.4 |
HIP 30929 |
20.75 |
| 2026-06-10 00:00 |
06:29:42.16 |
-33:44:54.6 |
HIP 30929 |
20.95 |
| 2026-06-10 12:00 |
06:29:44.81 |
-33:44:47.1 |
HIP 30929 |
21.16 |
| 2026-06-11 00:00 |
06:29:47.47 |
-33:44:39.8 |
HIP 30929 |
21.38 |
| 2026-06-11 12:00 |
06:29:50.13 |
-33:44:32.8 |
HIP 30929 |
21.61 |
| 2026-06-12 00:00 |
06:29:52.80 |
-33:44:26.1 |
HIP 30929 |
21.84 |
| 2026-06-12 12:00 |
06:29:55.47 |
-33:44:19.6 |
HIP 30929 |
22.08 |
| 2026-06-13 00:00 |
06:29:58.15 |
-33:44:13.3 |
HIP 30929 |
22.34 |
| 2026-06-13 12:00 |
06:30:00.84 |
-33:44:07.3 |
HIP 30929 |
22.59 |
| 2026-06-14 00:00 |
06:30:03.54 |
-33:44:01.6 |
HIP 30929 |
22.86 |
| 2026-06-14 12:00 |
06:30:06.24 |
-33:43:56.1 |
HIP 30929 |
23.13 |
| 2026-06-15 00:00 |
06:30:08.94 |
-33:43:50.8 |
HIP 30929 |
23.42 |
| 2026-06-15 12:00 |
06:30:11.65 |
-33:43:45.8 |
HIP 30929 |
23.70 |
| 2026-06-16 00:00 |
06:30:14.37 |
-33:43:41.1 |
HIP 30929 |
24.00 |
| 2026-06-16 12:00 |
06:30:17.09 |
-33:43:36.6 |
HIP 30929 |
24.30 |
| 2026-06-17 00:00 |
06:30:19.81 |
-33:43:32.4 |
HIP 30929 |
24.61 |
| 2026-06-17 12:00 |
06:30:22.54 |
-33:43:28.4 |
HIP 30929 |
24.92 |
| 2026-06-18 00:00 |
06:30:25.28 |
-33:43:24.7 |
HIP 30929 |
25.24 |
| 2026-06-18 12:00 |
06:30:28.02 |
-33:43:21.3 |
HIP 30929 |
25.56 |
| 2026-06-19 00:00 |
06:30:30.76 |
-33:43:18.1 |
HIP 30929 |
25.89 |
| 2026-06-19 12:00 |
06:30:33.50 |
-33:43:15.1 |
HIP 30929 |
26.22 |
| 2026-06-20 00:00 |
06:30:36.25 |
-33:43:12.4 |
HIP 30929 |
26.56 |
| 2026-06-20 12:00 |
06:30:39.01 |
-33:43:10.0 |
HIP 30929 |
26.91 |
| 2026-06-21 00:00 |
06:30:41.76 |
-33:43:07.8 |
HIP 30929 |
27.25 |
| 2026-06-21 12:00 |
06:30:44.52 |
-33:43:05.9 |
HIP 30929 |
27.61 |
| 2026-06-22 00:00 |
06:30:47.28 |
-33:43:04.2 |
HIP 30929 |
27.96 |