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100939 (1998 MG46)
Classification: Main-belt Asteroid          SPK-ID: 2100939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2284554564523429 4.2981e-08  
a 2.264039651646891 1.1097e-08 au
q 1.746807439603698 9.9648e-08 au
i 6.311242592750894 5.1552e-06 deg
node 288.0300989726 3.4713e-05 deg
peri 25.16480553142968 3.595e-05 deg
M 199.0275069465984 1.0856e-05 deg
tp 2459756.882727708011
(2022-Jun-26.38272771)
4.0117e-05 TDB
period 1244.298191421042
3.41
9.148e-06
2.505e-08
d
yr
n .289319716513342 2.127e-09 deg/d
Q 2.781271863690085 1.3632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      488  
   data-arc span      8296 days (22.71 yr)  
   first obs. used      1998-06-23  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57119  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:27  

Additional Information
 Earth MOID = .732962 au 
 Jupiter MOID = 2.5046 au 
 T_jup = 3.575 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO439690  

100939 (1998 MG46)          Discovered 1998-Jun-23 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1915-Sep-15 13:54 < 00:01 Iris 0.0193592502085484 0.0193388569851261 0.0193796436633286 6.73398204544118 6.73398200134383 2420756.078937706 0.569633983963237 1022.23269867083 54.3557239129458 5.945898256447 6194.2051663354 T 24 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:29 2021-Apr-13 15:34
2010-May-19 16:28 < 00:01 Europ 0.0242396790065504 0.0242381782473396 0.0242411797925076 5.10420567475233 5.10420558884767 2455336.186388627 0.717799553652283 88.2203303830584 38.3897221521313 -36.0667807408558 64750.0072777846 T 24 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:29 2021-Apr-13 15:34
2064-Nov-12 14:53 00:02 Europ 0.0450425907117966 0.0450413181473008 0.0450438645967134 5.00983173669948 5.00983168959902 2475237.120291909 2.05306004008205 457.840640559762 33.6563417227171 -83.2335103785728 198733.542359356 T 24 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:29 2021-Apr-13 15:34
2092-Feb-19 22:37 00:04 Europ 0.0493676749826991 0.0493538296942606 0.0493815202809619 5.16076788023273 5.16076783851558 2485197.442609132 3.91666702881981 691.000019539908 33.006205174887 2.87697181885997 15484.7108474629 T 24 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:29 2021-Apr-13 15:34
2173-Nov-04 18:56 00:07 Europ 0.0176337877803253 0.017610624542766 0.0176569696111112 5.20412894954865 5.20412883373012 2515040.288810906 7.18087348951503 1466.12920706472 34.3997527015413 -38.0288005061075 47241.4742007996 T 24 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:29 2021-Apr-13 15:34
2184-Nov-03 17:43 00:02 Iris 0.0102850843482235 0.0102727638542525 0.0102975373387497 6.59969474874601 6.59969466405422 2519057.238271394 1.91946089278297 1947.95491302954 53.7945873623348 -71.5824409480779 27130.8052303154 T 24 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:29 2021-Apr-13 15:34

Alternate Designations
 1998 MG46 = 1999 XG217 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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