메타데이터
| 항목 |
값 |
| Designation |
C/2024 N3 (Sarneczky) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-04-11T10:20:47.437440Z |
| Orbit solution date (soln_date, UTC) |
2026-07-21T13:12:11Z |
| Obs used |
727 |
| NEO |
- |
| M1 |
4.900 |
| K1 |
14.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-07-08T21:31:16.608000Z |
| Discovery magnitude (MPC) |
19.60 R |
| Discovery observatory (MPC) |
K88 · GINOP-KHK, Piszkéstető |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2025-06-02.0000000 |
| e |
1.00134570 |
| q (au) |
5.014583 |
| a (au) |
-3726.363573 |
| i (deg) |
88.728952 |
| Ω (om, deg) |
82.608773 |
| ω (w, deg) |
86.884311 |
| M (ma, deg) |
0.000223 |
밝기
산란 + 전체 선형
$$
M_a = (3.326 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
3.326 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| 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 |
| 2023-10-09 |
2025-04-08 |
+8.8492 |
-6.066 |
| 2025-04-18 |
2026-03-20 |
-5.0452 |
+3.367 |
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 |
17:03:21.91 |
+24:05:34.8 |
HIP 83375 |
12.87 |
| 2026-07-29 12:00 |
17:03:08.14 |
+24:00:11.8 |
HIP 83375 |
10.96 |
| 2026-07-30 00:00 |
17:02:54.56 |
+23:54:48.0 |
HIP 83375 |
12.36 |
| 2026-07-30 12:00 |
17:02:41.18 |
+23:49:23.6 |
HIP 83375 |
16.24 |
| 2026-07-31 00:00 |
17:02:27.98 |
+23:43:58.6 |
HIP 83375 |
21.27 |
| 2026-07-31 12:00 |
17:02:14.98 |
+23:38:32.9 |
HIP 83375 |
26.80 |
| 2026-08-01 00:00 |
17:02:02.17 |
+23:33:06.6 |
HIP 83375 |
32.57 |
| 2026-08-01 12:00 |
17:01:49.56 |
+23:27:39.7 |
HIP 83343 |
31.61 |
| 2026-08-02 00:00 |
17:01:37.14 |
+23:22:12.2 |
HIP 83343 |
26.58 |
| 2026-08-02 12:00 |
17:01:24.91 |
+23:16:44.2 |
HIP 83343 |
22.11 |
| 2026-08-03 00:00 |
17:01:12.87 |
+23:11:15.7 |
HIP 83343 |
18.59 |
| 2026-08-03 12:00 |
17:01:01.03 |
+23:05:46.7 |
HIP 83343 |
16.62 |
| 2026-08-04 00:00 |
17:00:49.38 |
+23:00:17.2 |
HIP 83343 |
16.75 |
| 2026-08-04 12:00 |
17:00:37.93 |
+22:54:47.2 |
HIP 83254 |
17.49 |
| 2026-08-05 00:00 |
17:00:26.67 |
+22:49:16.8 |
HIP 83254 |
13.47 |
| 2026-08-05 12:00 |
17:00:15.60 |
+22:43:45.9 |
HIP 83254 |
11.42 |
| 2026-08-06 00:00 |
17:00:04.72 |
+22:38:14.7 |
HIP 83254 |
12.33 |
| 2026-08-06 12:00 |
16:59:54.05 |
+22:32:43.1 |
HIP 83254 |
15.69 |
| 2026-08-07 00:00 |
16:59:43.56 |
+22:27:11.1 |
HIP 83254 |
20.30 |
| 2026-08-07 12:00 |
16:59:33.27 |
+22:21:38.8 |
HIP 83254 |
25.48 |
| 2026-08-08 00:00 |
16:59:23.17 |
+22:16:06.1 |
HIP 83254 |
30.95 |
| 2026-08-08 12:00 |
16:59:13.27 |
+22:10:33.2 |
HIP 83056 |
32.89 |
| 2026-08-09 00:00 |
16:59:03.56 |
+22:05:00.0 |
HIP 83056 |
26.90 |
| 2026-08-09 12:00 |
16:58:54.05 |
+21:59:26.5 |
HIP 83056 |
20.93 |
| 2026-08-10 00:00 |
16:58:44.73 |
+21:53:52.8 |
HIP 83056 |
14.97 |
| 2026-08-10 12:00 |
16:58:35.60 |
+21:48:18.8 |
HIP 83056 |
9.05 |
| 2026-08-11 00:00 |
16:58:26.67 |
+21:42:44.7 |
HIP 83056 |
3.28 |
| 2026-08-11 12:00 |
16:58:17.93 |
+21:37:10.4 |
HIP 83056 |
3.20 |
| 2026-08-12 00:00 |
16:58:09.39 |
+21:31:35.9 |
HIP 83056 |
8.94 |
| 2026-08-12 12:00 |
16:58:01.04 |
+21:26:01.3 |
HIP 83056 |
14.81 |
| 2026-08-13 00:00 |
16:57:52.88 |
+21:20:26.6 |
HIP 82994 |
19.58 |
| 2026-08-13 12:00 |
16:57:44.91 |
+21:14:51.8 |
HIP 82994 |
13.76 |
| 2026-08-14 00:00 |
16:57:37.14 |
+21:09:16.9 |
HIP 82994 |
8.03 |
| 2026-08-14 12:00 |
16:57:29.56 |
+21:03:42.0 |
HIP 82994 |
2.90 |
| 2026-08-15 00:00 |
16:57:22.18 |
+20:58:07.0 |
HIP 82994 |
4.53 |
| 2026-08-15 12:00 |
16:57:14.98 |
+20:52:32.0 |
HIP 82994 |
10.03 |
| 2026-08-16 00:00 |
16:57:07.98 |
+20:46:57.1 |
HIP 82994 |
15.75 |
| 2026-08-16 12:00 |
16:57:01.16 |
+20:41:22.1 |
HIP 82994 |
21.50 |
| 2026-08-17 00:00 |
16:56:54.54 |
+20:35:47.2 |
HIP 82808 |
21.84 |
| 2026-08-17 12:00 |
16:56:48.11 |
+20:30:12.4 |
HIP 82808 |
19.47 |
| 2026-08-18 00:00 |
16:56:41.87 |
+20:24:37.6 |
HIP 82808 |
18.70 |
| 2026-08-18 12:00 |
16:56:35.81 |
+20:19:03.0 |
HIP 82808 |
19.70 |
| 2026-08-19 00:00 |
16:56:29.94 |
+20:13:28.5 |
HIP 83004 |
21.88 |