메타데이터
| 항목 |
값 |
| Designation |
230P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-11-18T01:34:10.223040Z |
| Orbit solution date (soln_date, UTC) |
2025-11-13T12:12:40Z |
| Obs used |
1528 |
| NEO |
- |
| M1 |
15.600 |
| K1 |
5.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-07-24T08:25:25.536000Z |
| Discovery magnitude (MPC) |
21.80 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-07-08.0000000 |
| e |
0.56311389 |
| q (au) |
1.485293 |
| a (au) |
3.399726 |
| i (deg) |
14.653033 |
| Ω (om, deg) |
112.396470 |
| ω (w, deg) |
308.912952 |
| M (ma, deg) |
339.077991 |
밝기
산란 + 전체 선형
$$
M_a = (14.860 + 2.038\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.860 |
| n |
2.038 |
| gf |
0.876 |
| gb |
-0.500 |
| k |
0.937 |
| δ90 |
3.149 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
17:56:22.68 |
-15:26:44.0 |
HIP 87849 |
15.55 |
| 2026-03-26 12:00 |
17:56:28.18 |
-15:26:22.9 |
HIP 87849 |
15.41 |
| 2026-03-27 00:00 |
17:56:33.48 |
-15:26:01.7 |
HIP 87849 |
15.41 |
| 2026-03-27 12:00 |
17:56:38.59 |
-15:25:40.5 |
HIP 87849 |
15.53 |
| 2026-03-28 00:00 |
17:56:43.50 |
-15:25:19.2 |
HIP 87849 |
15.75 |
| 2026-03-28 12:00 |
17:56:48.21 |
-15:24:57.9 |
HIP 87849 |
16.07 |
| 2026-03-29 00:00 |
17:56:52.73 |
-15:24:36.5 |
HIP 87849 |
16.46 |
| 2026-03-29 12:00 |
17:56:57.05 |
-15:24:15.1 |
HIP 87849 |
16.92 |
| 2026-03-30 00:00 |
17:57:01.17 |
-15:23:53.7 |
HIP 87849 |
17.43 |
| 2026-03-30 12:00 |
17:57:05.10 |
-15:23:32.3 |
HIP 87849 |
17.97 |
| 2026-03-31 00:00 |
17:57:08.82 |
-15:23:10.8 |
HIP 87849 |
18.54 |
| 2026-03-31 12:00 |
17:57:12.34 |
-15:22:49.4 |
HIP 87849 |
19.13 |
| 2026-04-01 00:00 |
17:57:15.66 |
-15:22:27.9 |
HIP 87849 |
19.73 |
| 2026-04-01 12:00 |
17:57:18.78 |
-15:22:06.4 |
HIP 87849 |
20.32 |
| 2026-04-02 00:00 |
17:57:21.70 |
-15:21:44.9 |
HIP 87849 |
20.92 |
| 2026-04-02 12:00 |
17:57:24.41 |
-15:21:23.4 |
HIP 87849 |
21.51 |
| 2026-04-03 00:00 |
17:57:26.92 |
-15:21:01.9 |
HIP 87849 |
22.09 |
| 2026-04-03 12:00 |
17:57:29.23 |
-15:20:40.5 |
HIP 87849 |
22.65 |
| 2026-04-04 00:00 |
17:57:31.33 |
-15:20:19.0 |
HIP 87849 |
23.19 |
| 2026-04-04 12:00 |
17:57:33.22 |
-15:19:57.5 |
HIP 87849 |
23.72 |
| 2026-04-05 00:00 |
17:57:34.91 |
-15:19:36.1 |
HIP 87849 |
24.22 |
| 2026-04-05 12:00 |
17:57:36.39 |
-15:19:14.7 |
HIP 87849 |
24.71 |
| 2026-04-06 00:00 |
17:57:37.66 |
-15:18:53.3 |
HIP 87849 |
25.17 |
| 2026-04-06 12:00 |
17:57:38.72 |
-15:18:32.0 |
HIP 87849 |
25.60 |
| 2026-04-07 00:00 |
17:57:39.58 |
-15:18:10.7 |
HIP 87849 |
26.01 |
| 2026-04-07 12:00 |
17:57:40.22 |
-15:17:49.4 |
HIP 87849 |
26.40 |
| 2026-04-08 00:00 |
17:57:40.65 |
-15:17:28.2 |
HIP 87849 |
26.76 |
| 2026-04-08 12:00 |
17:57:40.88 |
-15:17:07.1 |
HIP 87849 |
27.09 |
| 2026-04-09 00:00 |
17:57:40.89 |
-15:16:46.0 |
HIP 87849 |
27.41 |
| 2026-04-09 12:00 |
17:57:40.69 |
-15:16:24.9 |
HIP 87849 |
27.69 |
| 2026-04-10 00:00 |
17:57:40.27 |
-15:16:03.9 |
HIP 87849 |
27.96 |
| 2026-04-10 12:00 |
17:57:39.64 |
-15:15:43.0 |
HIP 87849 |
28.21 |
| 2026-04-11 00:00 |
17:57:38.80 |
-15:15:22.2 |
HIP 87849 |
28.43 |
| 2026-04-11 12:00 |
17:57:37.75 |
-15:15:01.4 |
HIP 87849 |
28.64 |
| 2026-04-12 00:00 |
17:57:36.48 |
-15:14:40.7 |
HIP 87849 |
28.82 |
| 2026-04-12 12:00 |
17:57:34.99 |
-15:14:20.1 |
HIP 87849 |
29.00 |
| 2026-04-13 00:00 |
17:57:33.29 |
-15:13:59.6 |
HIP 87849 |
29.16 |
| 2026-04-13 12:00 |
17:57:31.38 |
-15:13:39.2 |
HIP 87849 |
29.30 |
| 2026-04-14 00:00 |
17:57:29.24 |
-15:13:18.9 |
HIP 87849 |
29.44 |
| 2026-04-14 12:00 |
17:57:26.89 |
-15:12:58.7 |
HIP 87849 |
29.58 |
| 2026-04-15 00:00 |
17:57:24.32 |
-15:12:38.6 |
HIP 87849 |
29.71 |
| 2026-04-15 12:00 |
17:57:21.54 |
-15:12:18.7 |
HIP 87849 |
29.84 |
| 2026-04-16 00:00 |
17:57:18.54 |
-15:11:58.8 |
HIP 87849 |
29.97 |