메타데이터
| 항목 |
값 |
| Designation |
450P/LONEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2027-01-21T06:20:43.192320Z |
| Orbit solution date (soln_date, UTC) |
2026-09-28T14:42:11Z |
| Obs used |
965 |
| NEO |
- |
| M1 |
6.800 |
| K1 |
11.250 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2004-01-13T06:33:13.248000Z |
| Discovery magnitude (MPC) |
18.40 N |
| Discovery observatory (MPC) |
699 · Lowell Observatory-LONEOS |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-01-31.0000000 |
| e |
0.31135247 |
| q (au) |
5.465295 |
| a (au) |
7.936274 |
| i (deg) |
10.559376 |
| Ω (om, deg) |
124.902358 |
| ω (w, deg) |
21.730364 |
| M (ma, deg) |
215.525705 |
밝기
산란 + 전체 선형
$$
M_a = (3.089 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
3.089 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.939 |
| 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 |
| 2022-08-21 |
2026-09-25 |
+9.7699 |
-7.376 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-25 00:00 |
09:42:34.17 |
+15:58:01.8 |
HIP 47557 |
17.20 |
| 2026-09-25 12:00 |
09:42:58.20 |
+15:56:35.5 |
HIP 47557 |
20.71 |
| 2026-09-26 00:00 |
09:43:22.15 |
+15:55:09.5 |
HIP 47557 |
25.13 |
| 2026-09-26 12:00 |
09:43:46.05 |
+15:53:43.7 |
HIP 47557 |
30.08 |
| 2026-09-27 00:00 |
09:44:09.87 |
+15:52:18.1 |
HIP 47784 |
33.04 |
| 2026-09-27 12:00 |
09:44:33.64 |
+15:50:52.9 |
HIP 47784 |
33.94 |
| 2026-09-28 00:00 |
09:44:57.33 |
+15:49:27.9 |
HIP 47784 |
35.79 |
| 2026-09-28 12:00 |
09:45:20.96 |
+15:48:03.2 |
HIP 48006 |
30.64 |
| 2026-09-29 00:00 |
09:45:44.52 |
+15:46:38.8 |
HIP 48006 |
25.16 |
| 2026-09-29 12:00 |
09:46:08.02 |
+15:45:14.7 |
HIP 48006 |
19.90 |
| 2026-09-30 00:00 |
09:46:31.44 |
+15:43:50.9 |
HIP 48006 |
15.08 |
| 2026-09-30 12:00 |
09:46:54.80 |
+15:42:27.4 |
HIP 48006 |
11.25 |
| 2026-10-01 00:00 |
09:47:18.08 |
+15:41:04.2 |
HIP 48006 |
9.64 |
| 2026-10-01 12:00 |
09:47:41.30 |
+15:39:41.3 |
HIP 48006 |
11.21 |
| 2026-10-02 00:00 |
09:48:04.44 |
+15:38:18.8 |
HIP 48151 |
13.04 |
| 2026-10-02 12:00 |
09:48:27.52 |
+15:36:56.5 |
HIP 48151 |
7.37 |
| 2026-10-03 00:00 |
09:48:50.51 |
+15:35:34.6 |
HIP 48151 |
2.01 |
| 2026-10-03 12:00 |
09:49:13.44 |
+15:34:13.1 |
HIP 48151 |
4.33 |
| 2026-10-04 00:00 |
09:49:36.29 |
+15:32:51.9 |
HIP 48151 |
9.89 |
| 2026-10-04 12:00 |
09:49:59.07 |
+15:31:31.1 |
HIP 48151 |
15.51 |
| 2026-10-05 00:00 |
09:50:21.77 |
+15:30:10.6 |
HIP 48151 |
21.12 |
| 2026-10-05 12:00 |
09:50:44.39 |
+15:28:50.5 |
HIP 48151 |
26.73 |
| 2026-10-06 00:00 |
09:51:06.94 |
+15:27:30.8 |
HIP 48467 |
27.18 |
| 2026-10-06 12:00 |
09:51:29.41 |
+15:26:11.4 |
HIP 48467 |
22.34 |
| 2026-10-07 00:00 |
09:51:51.80 |
+15:24:52.5 |
HIP 48467 |
17.94 |
| 2026-10-07 12:00 |
09:52:14.11 |
+15:23:33.9 |
HIP 48467 |
14.38 |
| 2026-10-08 00:00 |
09:52:36.34 |
+15:22:15.7 |
HIP 48467 |
12.35 |
| 2026-10-08 12:00 |
09:52:58.49 |
+15:20:58.0 |
HIP 48467 |
12.61 |
| 2026-10-09 00:00 |
09:53:20.55 |
+15:19:40.7 |
HIP 48467 |
15.01 |
| 2026-10-09 12:00 |
09:53:42.54 |
+15:18:23.8 |
HIP 48467 |
18.74 |
| 2026-10-10 00:00 |
09:54:04.44 |
+15:17:07.3 |
HIP 48467 |
23.13 |
| 2026-10-10 12:00 |
09:54:26.25 |
+15:15:51.2 |
HIP 48467 |
27.88 |
| 2026-10-11 00:00 |
09:54:47.98 |
+15:14:35.7 |
HIP 48467 |
32.81 |
| 2026-10-11 12:00 |
09:55:09.62 |
+15:13:20.5 |
HIP 48524 |
35.02 |
| 2026-10-12 00:00 |
09:55:31.18 |
+15:12:05.8 |
HIP 48751 |
32.79 |
| 2026-10-12 12:00 |
09:55:52.65 |
+15:10:51.6 |
HIP 48842 |
28.21 |
| 2026-10-13 00:00 |
09:56:14.03 |
+15:09:37.9 |
HIP 48842 |
22.92 |
| 2026-10-13 12:00 |
09:56:35.32 |
+15:08:24.6 |
HIP 48842 |
17.65 |
| 2026-10-14 00:00 |
09:56:56.52 |
+15:07:11.8 |
HIP 48842 |
12.40 |
| 2026-10-14 12:00 |
09:57:17.63 |
+15:05:59.5 |
HIP 48842 |
7.21 |
| 2026-10-15 00:00 |
09:57:38.65 |
+15:04:47.7 |
HIP 48842 |
2.25 |
| 2026-10-15 12:00 |
09:57:59.57 |
+15:03:36.4 |
HIP 48842 |
3.51 |
| 2026-10-16 00:00 |
09:58:20.41 |
+15:02:25.6 |
HIP 48842 |
8.55 |