Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.47003E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T16:27:45+0800
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    1 Object 1

    AOE ID 31305
    NORAD ID 31305
    Object Type ROCKET BODY
    Country
    US US
    VS

    2 Object 2

    AOE ID 55332
    NORAD ID 55332
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter PEGASUS R/B STARLINK-5491
    Time of Closest Approach 2026-09-04T15:45:12+0000
    Collision Probability (Pc) 1.47003E-6
    Conjunction Distance (km) 2.7 km
    Relative Speed (km/s) 13.585 km/s
    Conjunction Risk Parameters R (Radial): -2.633 | I (In-track): 0.278 | C (Cross-track): 0.523
    Collision Risk Index (CRI) 0.38
    X Position (km) -3772.364 -3774.033
    Position Y (km) -4140.993 -4142.112
    Position Z (km) -3961.486 -3963.289
    Velocity X (km/s) -3.865 6.362
    Velocity Y (km/s) -2.33 -3.152
    Velocity Z (km/s) 6.139 -2.765

    Orbital Parameters 国际轨道数据源

    Parameter PEGASUS R/B STARLINK-5491
    Semimajor Axis (a) 6855.350 km 6861.198 km
    Eccentricity (e) 0.001267 0.000133
    Inclination (i) 97.9356° 43.0053°
    RAAN 221.1751° 5.5618°
    Perigee Argument 52.2057° 270.1131°
    Mean Anomaly (M) 308.0327° 89.9568°
    Apogee 485.899 km 483.973 km
    Perigee 468.527 km 482.149 km
    Orbit Epoch 2026-09-03T21:04:04+0000 2026-09-03T08:54:03+0000

    PEGASUS R/B & STARLINK-5491 Collision Probability (Pc) Trend

    PEGASUS R/B & STARLINK-5491 Collision Probability (Pc) TrendNot Available

    PEGASUS R/B & STARLINK-5491 Miss Distance (Miss Distance) Trend

    PEGASUS R/B & STARLINK-5491 Miss Distance (Miss Distance) TrendNot Available

    PEGASUS R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5491Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    PEGASUS R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5491Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with PEGASUS R/B

    No nearby objects data