Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.424209E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T11:28:47+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    Name NOAA 17
    AOE ID 27453
    NORAD ID 27453
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 61557
    NORAD ID 61557
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter NOAA 17 QIANFAN-24
    Time of Closest Approach 2026-09-11T13:55:00+0000
    Collision Probability (Pc) 1.424209E-6
    Conjunction Distance (km) 2.861 km
    Relative Speed (km/s) 14.839 km/s
    Conjunction Risk Parameters R (Radial): 1.035 | I (In-track): -0.201 | C (Cross-track): -2.658
    Collision Risk Index (CRI) 0.38
    X Position (km) -4512.981 -4511.806
    Position Y (km) -4639.642 -4642.241
    Position Z (km) -3138.566 -3138.787
    Velocity X (km/s) -3.136 2.36
    Velocity Y (km/s) -1.395 2.217
    Velocity Z (km/s) 6.6 -6.701

    Orbital Parameters 国际轨道数据源

    Parameter NOAA 17 QIANFAN-24
    Semimajor Axis (a) 7182.380 km 7189.490 km
    Eccentricity (e) 0.001267 0.001133
    Inclination (i) 98.8757° 88.9819°
    RAAN 220.5286° 45.4250°
    Perigee Argument 102.5249° 124.7238°
    Mean Anomaly (M) 257.7349° 235.5023°
    Apogee 813.346 km 819.500 km
    Perigee 795.140 km 803.206 km
    Orbit Epoch 2026-09-10T16:09:07+0000 2026-09-10T16:43:09+0000

    NOAA 17 & QIANFAN-24 Collision Probability (Pc) Trend

    NOAA 17 & QIANFAN-24 Collision Probability (Pc) TrendNot Available

    NOAA 17 & QIANFAN-24 Miss Distance (Miss Distance) Trend

    NOAA 17 & QIANFAN-24 Miss Distance (Miss Distance) TrendNot Available

    NOAA 17Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-24Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NOAA 17Collision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-24Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NOAA 17

    No nearby objects data