메타데이터
| 항목 |
값 |
| Designation |
493P/LONEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2026-01-26T19:23:36.418560Z |
| Orbit solution date (soln_date, UTC) |
2026-03-31T09:42:43Z |
| Obs used |
1309 |
| NEO |
- |
| M1 |
6.800 |
| K1 |
14.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2005-09-30T09:07:51.744000Z |
| Discovery magnitude (MPC) |
19.10 N |
| Discovery observatory (MPC) |
699 · Lowell Observatory-LONEOS |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-10-02.0000000 |
| e |
0.46301087 |
| q (au) |
3.820503 |
| a (au) |
7.114675 |
| i (deg) |
24.052660 |
| Ω (om, deg) |
1.364642 |
| ω (w, deg) |
83.579490 |
| M (ma, deg) |
202.175375 |
밝기
산란 + 전체 선형
$$
M_a = (6.201 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.201 |
| n |
6.000 |
| gf |
0.870 |
| gb |
-0.500 |
| k |
0.944 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2024-08-02 |
2026-01-25 |
+6.5342 |
-4.004 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
05:07:06.70 |
+46:17:48.5 |
HIP 23827 |
11.21 |
| 2026-03-26 12:00 |
05:07:44.65 |
+46:15:55.1 |
HIP 23827 |
13.35 |
| 2026-03-27 00:00 |
05:08:22.77 |
+46:14:02.0 |
HIP 23827 |
18.00 |
| 2026-03-27 12:00 |
05:09:01.07 |
+46:12:09.3 |
HIP 23827 |
23.76 |
| 2026-03-28 00:00 |
05:09:39.54 |
+46:10:17.0 |
HIP 23827 |
30.02 |
| 2026-03-28 12:00 |
05:10:18.18 |
+46:08:24.9 |
HIP 24241 |
27.19 |
| 2026-03-29 00:00 |
05:10:56.98 |
+46:06:33.2 |
HIP 24241 |
24.09 |
| 2026-03-29 12:00 |
05:11:35.95 |
+46:04:41.8 |
HIP 24241 |
22.74 |
| 2026-03-30 00:00 |
05:12:15.09 |
+46:02:50.7 |
HIP 24241 |
23.48 |
| 2026-03-30 12:00 |
05:12:54.39 |
+46:00:59.9 |
HIP 24241 |
26.16 |
| 2026-03-31 00:00 |
05:13:33.85 |
+45:59:09.3 |
HIP 24241 |
30.28 |
| 2026-03-31 12:00 |
05:14:13.47 |
+45:57:19.1 |
HIP 24608 |
25.82 |
| 2026-04-01 00:00 |
05:14:53.24 |
+45:55:29.1 |
HIP 24608 |
19.30 |
| 2026-04-01 12:00 |
05:15:33.17 |
+45:53:39.4 |
HIP 24608 |
13.41 |
| 2026-04-02 00:00 |
05:16:13.26 |
+45:51:49.9 |
HIP 24608 |
9.46 |
| 2026-04-02 12:00 |
05:16:53.50 |
+45:50:00.7 |
HIP 24608 |
10.15 |
| 2026-04-03 00:00 |
05:17:33.89 |
+45:48:11.8 |
HIP 24608 |
14.89 |
| 2026-04-03 12:00 |
05:18:14.43 |
+45:46:23.0 |
HIP 24608 |
21.13 |
| 2026-04-04 00:00 |
05:18:55.11 |
+45:44:34.5 |
HIP 24608 |
27.91 |
| 2026-04-04 12:00 |
05:19:35.95 |
+45:42:46.2 |
HIP 25099 |
30.21 |
| 2026-04-05 00:00 |
05:20:16.93 |
+45:40:58.1 |
HIP 25099 |
23.95 |
| 2026-04-05 12:00 |
05:20:58.05 |
+45:39:10.2 |
HIP 25099 |
18.49 |
| 2026-04-06 00:00 |
05:21:39.31 |
+45:37:22.5 |
HIP 25099 |
14.80 |
| 2026-04-06 12:00 |
05:22:20.72 |
+45:35:35.0 |
HIP 25099 |
14.35 |
| 2026-04-07 00:00 |
05:23:02.26 |
+45:33:47.7 |
HIP 25099 |
17.43 |
| 2026-04-07 12:00 |
05:23:43.95 |
+45:32:00.5 |
HIP 25099 |
22.68 |
| 2026-04-08 00:00 |
05:24:25.77 |
+45:30:13.5 |
HIP 25348 |
18.92 |
| 2026-04-08 12:00 |
05:25:07.72 |
+45:28:26.7 |
HIP 25348 |
14.85 |
| 2026-04-09 00:00 |
05:25:49.81 |
+45:26:40.0 |
HIP 25348 |
14.08 |
| 2026-04-09 12:00 |
05:26:32.03 |
+45:24:53.5 |
HIP 25348 |
17.11 |
| 2026-04-10 00:00 |
05:27:14.38 |
+45:23:07.0 |
HIP 25348 |
22.46 |
| 2026-04-10 12:00 |
05:27:56.86 |
+45:21:20.8 |
HIP 25348 |
28.90 |
| 2026-04-11 00:00 |
05:28:39.47 |
+45:19:34.6 |
HIP 25348 |
35.86 |
| 2026-04-11 12:00 |
05:29:22.21 |
+45:17:48.6 |
HIP 25803 |
36.40 |
| 2026-04-12 00:00 |
05:30:05.07 |
+45:16:02.6 |
HIP 25986 |
31.00 |
| 2026-04-12 12:00 |
05:30:48.05 |
+45:14:16.8 |
HIP 25986 |
25.44 |
| 2026-04-13 00:00 |
05:31:31.16 |
+45:12:31.1 |
HIP 26038 |
18.72 |
| 2026-04-13 12:00 |
05:32:14.39 |
+45:10:45.4 |
HIP 26038 |
11.59 |
| 2026-04-14 00:00 |
05:32:57.74 |
+45:08:59.9 |
HIP 26038 |
6.34 |
| 2026-04-14 12:00 |
05:33:41.21 |
+45:07:14.4 |
HIP 26038 |
8.30 |
| 2026-04-15 00:00 |
05:34:24.80 |
+45:05:29.0 |
HIP 26038 |
14.89 |
| 2026-04-15 12:00 |
05:35:08.50 |
+45:03:43.6 |
HIP 26316 |
21.31 |
| 2026-04-16 00:00 |
05:35:52.31 |
+45:01:58.3 |
HIP 26316 |
16.36 |