메타데이터
| 항목 |
값 |
| Designation |
498P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-12-19T02:34:38.876160Z |
| Orbit solution date (soln_date, UTC) |
2025-04-11T14:45:22Z |
| Obs used |
368 |
| NEO |
- |
| M1 |
6.200 |
| K1 |
40.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2015-02-13T02:33:34.560000Z |
| Discovery magnitude (MPC) |
19.90 r |
| Discovery observatory (MPC) |
G45 · Space Surveillance Telescope, Atom Site |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2024-02-04.0000000 |
| e |
0.57239000 |
| q (au) |
1.963512 |
| a (au) |
4.591829 |
| i (deg) |
14.479162 |
| Ω (om, deg) |
279.253586 |
| ω (w, deg) |
179.143815 |
| M (ma, deg) |
328.035909 |
밝기
산란 + 전체 선형
$$
M_a = (18.691 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
18.691 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.685 |
| 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 |
13:35:54.30 |
-26:31:48.6 |
HIP 66398 |
12.25 |
| 2026-06-01 12:00 |
13:35:45.45 |
-26:29:07.8 |
HIP 66398 |
14.10 |
| 2026-06-02 00:00 |
13:35:36.84 |
-26:26:27.8 |
HIP 66400 |
16.37 |
| 2026-06-02 12:00 |
13:35:28.47 |
-26:23:48.6 |
HIP 66400 |
18.86 |
| 2026-06-03 00:00 |
13:35:20.34 |
-26:21:10.3 |
HIP 66400 |
21.51 |
| 2026-06-03 12:00 |
13:35:12.45 |
-26:18:32.7 |
HIP 66400 |
24.24 |
| 2026-06-04 00:00 |
13:35:04.80 |
-26:15:55.9 |
HIP 66400 |
27.01 |
| 2026-06-04 12:00 |
13:34:57.39 |
-26:13:20.1 |
HIP 66400 |
29.80 |
| 2026-06-05 00:00 |
13:34:50.22 |
-26:10:45.0 |
HIP 66400 |
32.59 |
| 2026-06-05 12:00 |
13:34:43.29 |
-26:08:10.9 |
HIP 66400 |
35.37 |
| 2026-06-06 00:00 |
13:34:36.60 |
-26:05:37.7 |
HIP 65998 |
37.06 |
| 2026-06-06 12:00 |
13:34:30.15 |
-26:03:05.4 |
HIP 65998 |
35.80 |
| 2026-06-07 00:00 |
13:34:23.95 |
-26:00:34.1 |
HIP 65998 |
34.79 |
| 2026-06-07 12:00 |
13:34:17.98 |
-25:58:03.7 |
HIP 65998 |
34.04 |
| 2026-06-08 00:00 |
13:34:12.26 |
-25:55:34.3 |
HIP 65998 |
33.56 |
| 2026-06-08 12:00 |
13:34:06.77 |
-25:53:05.9 |
HIP 65998 |
33.35 |
| 2026-06-09 00:00 |
13:34:01.53 |
-25:50:38.5 |
HIP 65998 |
33.40 |
| 2026-06-09 12:00 |
13:33:56.53 |
-25:48:12.1 |
HIP 66281 |
33.71 |
| 2026-06-10 00:00 |
13:33:51.77 |
-25:45:46.8 |
HIP 66281 |
32.12 |
| 2026-06-10 12:00 |
13:33:47.25 |
-25:43:22.5 |
HIP 66281 |
30.66 |
| 2026-06-11 00:00 |
13:33:42.96 |
-25:40:59.3 |
HIP 66281 |
29.34 |
| 2026-06-11 12:00 |
13:33:38.92 |
-25:38:37.2 |
HIP 66281 |
28.17 |
| 2026-06-12 00:00 |
13:33:35.12 |
-25:36:16.1 |
HIP 66281 |
27.16 |
| 2026-06-12 12:00 |
13:33:31.56 |
-25:33:56.2 |
HIP 66281 |
26.31 |
| 2026-06-13 00:00 |
13:33:28.24 |
-25:31:37.4 |
HIP 66281 |
25.64 |
| 2026-06-13 12:00 |
13:33:25.16 |
-25:29:19.8 |
HIP 66281 |
25.15 |
| 2026-06-14 00:00 |
13:33:22.32 |
-25:27:03.3 |
HIP 66281 |
24.84 |
| 2026-06-14 12:00 |
13:33:19.72 |
-25:24:47.9 |
HIP 66281 |
24.70 |
| 2026-06-15 00:00 |
13:33:17.36 |
-25:22:33.8 |
HIP 66281 |
24.73 |
| 2026-06-15 12:00 |
13:33:15.23 |
-25:20:20.8 |
HIP 66281 |
24.92 |
| 2026-06-16 00:00 |
13:33:13.34 |
-25:18:09.1 |
HIP 66281 |
25.27 |
| 2026-06-16 12:00 |
13:33:11.69 |
-25:15:58.5 |
HIP 66281 |
25.74 |
| 2026-06-17 00:00 |
13:33:10.28 |
-25:13:49.2 |
HIP 66281 |
26.34 |
| 2026-06-17 12:00 |
13:33:09.10 |
-25:11:41.1 |
HIP 66281 |
27.05 |
| 2026-06-18 00:00 |
13:33:08.16 |
-25:09:34.3 |
HIP 66281 |
27.84 |
| 2026-06-18 12:00 |
13:33:07.45 |
-25:07:28.7 |
HIP 66281 |
28.71 |
| 2026-06-19 00:00 |
13:33:06.98 |
-25:05:24.4 |
HIP 66281 |
29.65 |
| 2026-06-19 12:00 |
13:33:06.74 |
-25:03:21.3 |
HIP 66281 |
30.65 |
| 2026-06-20 00:00 |
13:33:06.73 |
-25:01:19.6 |
HIP 66281 |
31.69 |
| 2026-06-20 12:00 |
13:33:06.96 |
-24:59:19.1 |
HIP 66281 |
32.77 |
| 2026-06-21 00:00 |
13:33:07.41 |
-24:57:19.9 |
HIP 66281 |
33.88 |
| 2026-06-21 12:00 |
13:33:08.09 |
-24:55:22.0 |
HIP 66281 |
35.01 |
| 2026-06-22 00:00 |
13:33:09.01 |
-24:53:25.4 |
HIP 66281 |
36.16 |