Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.499519E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T05:14:05+0800
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    1 Object 1

    AOE ID 48737
    NORAD ID 48737
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 52999
    NORAD ID 52999
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter NOAA 17 DEB STARLINK-4217
    Time of Closest Approach 2026-09-04T17:43:27+0000
    Collision Probability (Pc) 9.499519E-7
    Conjunction Distance (km) 2.783 km
    Relative Speed (km/s) 6.828 km/s
    Conjunction Risk Parameters R (Radial): 1.27 | I (In-track): 2.214 | C (Cross-track): 1.109
    Collision Risk Index (CRI) 0.35
    X Position (km) -5322.907 -5325.237
    Position Y (km) 2746.035 2746.438
    Position Z (km) 3294.203 3292.736
    Velocity X (km/s) -2.624 -4.787
    Velocity Y (km/s) 2.836 -3.411
    Velocity Z (km/s) -6.587 -4.879

    Orbital Parameters 国际轨道数据源

    Parameter NOAA 17 DEB STARLINK-4217
    Semimajor Axis (a) 6835.997 km 6840.855 km
    Eccentricity (e) 0.000504 0.000112
    Inclination (i) 98.6950° 53.1617°
    RAAN 324.8525° 11.4825°
    Perigee Argument 301.9700° 83.1341°
    Mean Anomaly (M) 58.1050° 276.9789°
    Apogee 461.303 km 463.483 km
    Perigee 454.417 km 461.953 km
    Orbit Epoch 2026-09-02T04:06:28+0000 2026-09-01T15:37:53+0000

    NOAA 17 DEB & STARLINK-4217 Collision Probability (Pc) Trend

    NOAA 17 DEB & STARLINK-4217 Collision Probability (Pc) TrendNot Available

    NOAA 17 DEB & STARLINK-4217 Miss Distance (Miss Distance) Trend

    NOAA 17 DEB & STARLINK-4217 Miss Distance (Miss Distance) TrendNot Available

    NOAA 17 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4217Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NOAA 17 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4217Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NOAA 17 DEB

    No nearby objects data