메타데이터
| 항목 |
값 |
| Designation |
410P/NEAT-LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2021-06-23T16:08:47.518080Z |
| Orbit solution date (soln_date, UTC) |
2024-10-10T17:20:56Z |
| Obs used |
272 |
| NEO |
- |
| M1 |
15.300 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2003-11-19T08:35:26.880000Z |
| Discovery magnitude (MPC) |
19.40 |
| Discovery observatory (MPC) |
644 · Palomar Mountain/NEAT |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-10-23.0000000 |
| e |
0.51001407 |
| q (au) |
3.246901 |
| a (au) |
6.626518 |
| i (deg) |
9.393692 |
| Ω (om, deg) |
139.982329 |
| ω (w, deg) |
313.113433 |
| M (ma, deg) |
345.920638 |
밝기
산란 + 전체 선형
$$
M_a = (14.656 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.656 |
| n |
2.000 |
| gf |
0.995 |
| gb |
-0.926 |
| k |
1.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2020-08-29 |
2021-02-13 |
+16.5564 |
-8.722 |
| 2021-11-07 |
2022-04-29 |
-18.9461 |
+10.146 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
15:48:13.69 |
-10:09:49.3 |
HIP 77367 |
10.66 |
| 2026-07-29 12:00 |
15:48:11.95 |
-10:10:17.9 |
HIP 77367 |
10.49 |
| 2026-07-30 00:00 |
15:48:10.31 |
-10:10:46.9 |
HIP 77367 |
10.38 |
| 2026-07-30 12:00 |
15:48:08.78 |
-10:11:16.2 |
HIP 77367 |
10.34 |
| 2026-07-31 00:00 |
15:48:07.36 |
-10:11:46.0 |
HIP 77367 |
10.36 |
| 2026-07-31 12:00 |
15:48:06.05 |
-10:12:16.2 |
HIP 77367 |
10.43 |
| 2026-08-01 00:00 |
15:48:04.85 |
-10:12:46.7 |
HIP 77367 |
10.57 |
| 2026-08-01 12:00 |
15:48:03.76 |
-10:13:17.7 |
HIP 77367 |
10.76 |
| 2026-08-02 00:00 |
15:48:02.77 |
-10:13:49.0 |
HIP 77342 |
10.69 |
| 2026-08-02 12:00 |
15:48:01.90 |
-10:14:20.7 |
HIP 77342 |
10.31 |
| 2026-08-03 00:00 |
15:48:01.14 |
-10:14:52.8 |
HIP 77342 |
9.96 |
| 2026-08-03 12:00 |
15:48:00.49 |
-10:15:25.3 |
HIP 77342 |
9.67 |
| 2026-08-04 00:00 |
15:47:59.95 |
-10:15:58.2 |
HIP 77342 |
9.42 |
| 2026-08-04 12:00 |
15:47:59.52 |
-10:16:31.4 |
HIP 77342 |
9.23 |
| 2026-08-05 00:00 |
15:47:59.20 |
-10:17:05.0 |
HIP 77342 |
9.09 |
| 2026-08-05 12:00 |
15:47:58.99 |
-10:17:39.0 |
HIP 77342 |
9.02 |
| 2026-08-06 00:00 |
15:47:58.89 |
-10:18:13.3 |
HIP 77342 |
9.01 |
| 2026-08-06 12:00 |
15:47:58.90 |
-10:18:48.1 |
HIP 77342 |
9.06 |
| 2026-08-07 00:00 |
15:47:59.02 |
-10:19:23.1 |
HIP 77342 |
9.17 |
| 2026-08-07 12:00 |
15:47:59.25 |
-10:19:58.6 |
HIP 77342 |
9.35 |
| 2026-08-08 00:00 |
15:47:59.59 |
-10:20:34.4 |
HIP 77342 |
9.59 |
| 2026-08-08 12:00 |
15:48:00.04 |
-10:21:10.5 |
HIP 77342 |
9.89 |
| 2026-08-09 00:00 |
15:48:00.60 |
-10:21:47.0 |
HIP 77342 |
10.25 |
| 2026-08-09 12:00 |
15:48:01.27 |
-10:22:23.9 |
HIP 77342 |
10.65 |
| 2026-08-10 00:00 |
15:48:02.05 |
-10:23:01.1 |
HIP 77342 |
11.11 |
| 2026-08-10 12:00 |
15:48:02.94 |
-10:23:38.7 |
HIP 77342 |
11.61 |
| 2026-08-11 00:00 |
15:48:03.94 |
-10:24:16.6 |
HIP 77342 |
12.15 |
| 2026-08-11 12:00 |
15:48:05.05 |
-10:24:54.8 |
HIP 77342 |
12.73 |
| 2026-08-12 00:00 |
15:48:06.28 |
-10:25:33.4 |
HIP 77342 |
13.34 |
| 2026-08-12 12:00 |
15:48:07.61 |
-10:26:12.3 |
HIP 77342 |
13.99 |
| 2026-08-13 00:00 |
15:48:09.05 |
-10:26:51.5 |
HIP 77342 |
14.67 |
| 2026-08-13 12:00 |
15:48:10.60 |
-10:27:31.1 |
HIP 77342 |
15.38 |
| 2026-08-14 00:00 |
15:48:12.26 |
-10:28:11.0 |
HIP 77342 |
16.12 |
| 2026-08-14 12:00 |
15:48:14.03 |
-10:28:51.2 |
HIP 77342 |
16.89 |
| 2026-08-15 00:00 |
15:48:15.90 |
-10:29:31.7 |
HIP 77342 |
17.68 |
| 2026-08-15 12:00 |
15:48:17.89 |
-10:30:12.5 |
HIP 77342 |
18.50 |
| 2026-08-16 00:00 |
15:48:19.99 |
-10:30:53.7 |
HIP 77342 |
19.34 |
| 2026-08-16 12:00 |
15:48:22.19 |
-10:31:35.1 |
HIP 77342 |
20.21 |
| 2026-08-17 00:00 |
15:48:24.50 |
-10:32:16.9 |
HIP 77342 |
21.10 |
| 2026-08-17 12:00 |
15:48:26.92 |
-10:32:58.9 |
HIP 77342 |
22.02 |
| 2026-08-18 00:00 |
15:48:29.45 |
-10:33:41.3 |
HIP 77342 |
22.95 |
| 2026-08-18 12:00 |
15:48:32.08 |
-10:34:23.9 |
HIP 77342 |
23.91 |
| 2026-08-19 00:00 |
15:48:34.82 |
-10:35:06.9 |
HIP 77342 |
24.89 |