Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.062013E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T12:05:41+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    Name USA 61
    AOE ID 20691
    NORAD ID 20691
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 58747
    NORAD ID 58747
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter USA 61 STARLINK-31183
    Time of Closest Approach 2026-09-04T10:06:05+0000
    Collision Probability (Pc) 1.062013E-6
    Conjunction Distance (km) 2.637 km
    Relative Speed (km/s) 7.267 km/s
    Conjunction Risk Parameters R (Radial): -2.623 | I (In-track): -0.262 | C (Cross-track): -0.012
    Collision Risk Index (CRI) 0.36
    X Position (km) 4526.887 4525.352
    Position Y (km) 2185.006 2184.098
    Position Z (km) 4665.272 4663.329
    Velocity X (km/s) -6.182 -3.019
    Velocity Y (km/s) 2.386 6.996
    Velocity Z (km/s) 4.297 -0.346

    Orbital Parameters 国际轨道数据源

    Parameter USA 61 STARLINK-31183
    Semimajor Axis (a) 7400.819 km 6861.184 km
    Eccentricity (e) 0.087813 0.000140
    Inclination (i) 63.2966° 43.0013°
    RAAN 359.7234° 297.2996°
    Perigee Argument 86.6977° 262.4145°
    Mean Anomaly (M) 283.4004° 97.6548°
    Apogee 1672.572 km 484.006 km
    Perigee 372.792 km 482.088 km
    Orbit Epoch 2026-09-03T18:02:22+0000 2026-09-03T05:26:46+0000

    USA 61 & STARLINK-31183 Collision Probability (Pc) Trend

    USA 61 & STARLINK-31183 Collision Probability (Pc) TrendNot Available

    USA 61 & STARLINK-31183 Miss Distance (Miss Distance) Trend

    USA 61 & STARLINK-31183 Miss Distance (Miss Distance) TrendNot Available

    USA 61Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31183Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 61Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31183Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 61

    No nearby objects data