메타데이터
| 항목 |
값 |
| Designation |
479P/Elenin |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-05-05T07:27:38.416320Z |
| Orbit solution date (soln_date, UTC) |
2024-08-11T00:12:26Z |
| Obs used |
990 |
| NEO |
Yes |
| M1 |
16.200 |
| K1 |
6.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-11-18T13:30:33.264000Z |
| Discovery magnitude (MPC) |
21.79 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2023-03-04.0000000 |
| e |
0.77856369 |
| q (au) |
1.244472 |
| a (au) |
5.619998 |
| i (deg) |
15.393352 |
| Ω (om, deg) |
295.845766 |
| ω (w, deg) |
263.493717 |
| M (ma, deg) |
328.314623 |
밝기
산란 + 전체 선형
$$
M_a = (15.000 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
15.000 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.637 |
| k |
0.800 |
| 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 |
| 2023-10-17 |
2024-05-04 |
+6.0878 |
-1.609 |
| 2024-05-05 |
2024-08-05 |
+11.6597 |
-2.541 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
23:20:56.40 |
+08:19:39.3 |
HIP 115324 |
8.55 |
| 2026-06-01 12:00 |
23:21:01.96 |
+08:21:22.2 |
HIP 115324 |
7.29 |
| 2026-06-02 00:00 |
23:21:07.40 |
+08:23:04.4 |
HIP 115324 |
6.56 |
| 2026-06-02 12:00 |
23:21:12.70 |
+08:24:46.1 |
HIP 115324 |
6.53 |
| 2026-06-03 00:00 |
23:21:17.88 |
+08:26:27.1 |
HIP 115324 |
7.18 |
| 2026-06-03 12:00 |
23:21:22.92 |
+08:28:07.5 |
HIP 115324 |
8.33 |
| 2026-06-04 00:00 |
23:21:27.84 |
+08:29:47.3 |
HIP 115324 |
9.78 |
| 2026-06-04 12:00 |
23:21:32.63 |
+08:31:26.4 |
HIP 115324 |
11.41 |
| 2026-06-05 00:00 |
23:21:37.28 |
+08:33:04.9 |
HIP 115324 |
13.14 |
| 2026-06-05 12:00 |
23:21:41.81 |
+08:34:42.7 |
HIP 115324 |
14.92 |
| 2026-06-06 00:00 |
23:21:46.20 |
+08:36:19.8 |
HIP 115324 |
16.73 |
| 2026-06-06 12:00 |
23:21:50.46 |
+08:37:56.4 |
HIP 115324 |
18.54 |
| 2026-06-07 00:00 |
23:21:54.58 |
+08:39:32.2 |
HIP 115324 |
20.36 |
| 2026-06-07 12:00 |
23:21:58.58 |
+08:41:07.4 |
HIP 115324 |
22.17 |
| 2026-06-08 00:00 |
23:22:02.44 |
+08:42:41.8 |
HIP 115324 |
23.96 |
| 2026-06-08 12:00 |
23:22:06.16 |
+08:44:15.6 |
HIP 115242 |
25.54 |
| 2026-06-09 00:00 |
23:22:09.75 |
+08:45:48.7 |
HIP 115242 |
25.74 |
| 2026-06-09 12:00 |
23:22:13.21 |
+08:47:21.1 |
HIP 115242 |
26.04 |
| 2026-06-10 00:00 |
23:22:16.53 |
+08:48:52.8 |
HIP 115242 |
26.42 |
| 2026-06-10 12:00 |
23:22:19.71 |
+08:50:23.8 |
HIP 115242 |
26.87 |
| 2026-06-11 00:00 |
23:22:22.76 |
+08:51:54.1 |
HIP 115242 |
27.39 |
| 2026-06-11 12:00 |
23:22:25.67 |
+08:53:23.7 |
HIP 115242 |
27.97 |
| 2026-06-12 00:00 |
23:22:28.44 |
+08:54:52.5 |
HIP 115242 |
28.60 |
| 2026-06-12 12:00 |
23:22:31.07 |
+08:56:20.6 |
HIP 115242 |
29.28 |
| 2026-06-13 00:00 |
23:22:33.57 |
+08:57:47.9 |
HIP 115242 |
29.99 |
| 2026-06-13 12:00 |
23:22:35.92 |
+08:59:14.5 |
HIP 115242 |
30.72 |
| 2026-06-14 00:00 |
23:22:38.14 |
+09:00:40.3 |
HIP 115242 |
31.49 |
| 2026-06-14 12:00 |
23:22:40.22 |
+09:02:05.4 |
HIP 115242 |
32.27 |
| 2026-06-15 00:00 |
23:22:42.16 |
+09:03:29.7 |
HIP 115242 |
33.06 |
| 2026-06-15 12:00 |
23:22:43.95 |
+09:04:53.2 |
HIP 115242 |
33.86 |
| 2026-06-16 00:00 |
23:22:45.61 |
+09:06:16.0 |
HIP 115242 |
34.67 |
| 2026-06-16 12:00 |
23:22:47.13 |
+09:07:37.9 |
HIP 115242 |
35.48 |
| 2026-06-17 00:00 |
23:22:48.50 |
+09:08:59.1 |
HIP 115242 |
36.29 |
| 2026-06-17 12:00 |
23:22:49.73 |
+09:10:19.5 |
HIP 115242 |
37.10 |
| 2026-06-18 00:00 |
23:22:50.83 |
+09:11:39.0 |
HIP 115242 |
37.90 |
| 2026-06-18 12:00 |
23:22:51.78 |
+09:12:57.8 |
HIP 115293 |
38.04 |
| 2026-06-19 00:00 |
23:22:52.58 |
+09:14:15.7 |
HIP 115293 |
37.32 |
| 2026-06-19 12:00 |
23:22:53.25 |
+09:15:32.9 |
HIP 115293 |
36.61 |
| 2026-06-20 00:00 |
23:22:53.78 |
+09:16:49.2 |
HIP 115293 |
35.91 |
| 2026-06-20 12:00 |
23:22:54.16 |
+09:18:04.6 |
HIP 115293 |
35.23 |
| 2026-06-21 00:00 |
23:22:54.40 |
+09:19:19.3 |
HIP 115293 |
34.55 |
| 2026-06-21 12:00 |
23:22:54.49 |
+09:20:33.1 |
HIP 115293 |
33.89 |
| 2026-06-22 00:00 |
23:22:54.45 |
+09:21:46.1 |
HIP 115293 |
33.24 |