Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    1.277915E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T18:17:26+0800
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    1 Object 1

    Name STEP 2
    AOE ID 23105
    NORAD ID 23105
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 67371
    NORAD ID 67371
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STEP 2 UMBRA-12
    Time of Closest Approach 2026-09-06T03:12:25+0000
    Collision Probability (Pc) 1.277915E-5
    Conjunction Distance (km) 1.241 km
    Relative Speed (km/s) 14.782 km/s
    Conjunction Risk Parameters R (Radial): 1.14 | I (In-track): 0.109 | C (Cross-track): 0.479
    Collision Risk Index (CRI) 0.57
    X Position (km) -980.947 -980.631
    Position Y (km) 115.051 114.97
    Position Z (km) 6899.289 6900.486
    Velocity X (km/s) 0.13 2.933
    Velocity Y (km/s) -7.554 6.959
    Velocity Z (km/s) 0.206 0.297

    Orbital Parameters 国际轨道数据源

    Parameter STEP 2 UMBRA-12
    Semimajor Axis (a) 6972.777 km 6976.403 km
    Eccentricity (e) 0.008182 0.000454
    Inclination (i) 81.9348° 97.8074°
    RAAN 92.3214° 244.9629°
    Perigee Argument 357.6576° 219.5705°
    Mean Anomaly (M) 2.4245° 140.5182°
    Apogee 651.694 km 601.436 km
    Perigee 537.586 km 595.096 km
    Orbit Epoch 2026-09-05T01:02:41+0000 2026-09-04T05:41:00+0000

    STEP 2 & UMBRA-12 Collision Probability (Pc) Trend

    STEP 2 & UMBRA-12 Collision Probability (Pc) TrendNot Available

    STEP 2 & UMBRA-12 Miss Distance (Miss Distance) Trend

    STEP 2 & UMBRA-12 Miss Distance (Miss Distance) TrendNot Available

    STEP 2Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    UMBRA-12Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STEP 2Collision Probability Trend

    Object 1 Probability TrendNot Available

    UMBRA-12Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STEP 2

    No nearby objects data