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101179 (1998 SA9)
Classification: Main-belt Asteroid          SPK-ID: 2101179
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1828273239329322 3.7675e-08  
a 3.031153326807283 1.7822e-08 au
q 2.476975675636703 1.1361e-07 au
i .9314703823512915 4.5549e-06 deg
node 61.76136963423451 0.00034654 deg
peri 1.332484444672113 0.00034706 deg
M 36.12129448189273 1.7216e-05 deg
tp 2459007.093489396842
(2020-Jun-06.59348940)
9.201e-05 TDB
period 1927.570559577811
5.28
1.7e-05
4.654e-08
d
yr
n .1867635912009621 1.6472e-09 deg/d
Q 3.585330977977863 2.1081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      404  
   data-arc span      15832 days (43.35 yr)  
   first obs. used      1977-10-16  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48071  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:34  

Additional Information
 Earth MOID = 1.48956 au 
 Jupiter MOID = 1.74417 au 
 T_jup = 3.217 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457567.5 (2016-Jun-28.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784320343680586 3.7284e-08  
q 2.495534592573066 1.1168e-07 au
tp 2457076.026375331360
(2015-Feb-22.52637533)
9.7775e-05 TDB
node 61.68390375101233 0.00034559 deg
peri 1.319429196402097 0.00034615 deg
i .9351804961623768 4.5415e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      404  
   data-arc span      15832 days (43.35 yr)  
   first obs. used      1977-10-16  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48071  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:34  

Additional Information
 Jupiter MOID = 1.74417 au 
 T_jup = 3.217 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.390127173519239E-15 -4.126482092659818E-15 -2.986510728958898E-13 -1.969160957037306E-14 -5.362534215926536E-14 -1.768238098300858E-16
q -4.126482092659818E-15 1.24721272474264E-14 6.60206079646285E-13 5.659546009288353E-14 1.241881332279497E-13 6.471058938564515E-16
tp -2.986510728958898E-13 6.60206079646285E-13 9.560032162524855E-9 7.661643785697546E-11 1.979261908570227E-9 -5.374220577509873E-13
node -1.969160957037306E-14 5.659546009288353E-14 7.661643785697546E-11 1.194305137779084E-7 -1.193985353841279E-7 -7.271191357653486E-11
peri -5.362534215926536E-14 1.241881332279497E-13 1.979261908570227E-9 -1.193985353841279E-7 1.198216772101596E-7 7.259295735328656E-11
i -1.768238098300858E-16 6.471058938564515E-16 -5.374220577509873E-13 -7.271191357653486E-11 7.259295735328656E-11 2.062554359550766E-11

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 16.16   n/a MPCxxxxx  
diameter diameter 2.545 km 0.618 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101179 (1998 SA9)          Discovered 1998-Sep-20 by Spacewatch at Kitt Peak
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
1912-May-11 21:01 00:03 Jupiter 1.76569768404857 1.76569730975508 1.76569805834176 1.59748992958565 1.26196451737908 2419534.375865621 3.00303972895099 89.7749288941017 61.6196053968172 86.0702765343488 2355273.79481828 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 15:35:36 2021-Apr-13 15:35
1959-Dec-04 01:10 00:02 Jupiter 1.76101092120739 1.76101057082724 1.76101127158725 1.60103089181882 1.26543545097437 2436906.548956934 1.65487928651956 88.3487447074485 60.192889656273 89.536762892634 2280062.49280246 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 15:35:36 2021-Apr-13 15:35
2007-Jun-25 07:15 < 00:01 Jupiter 1.75860156369733 1.75860119551476 1.75860193187949 1.61172471089925 1.27842307729312 2454276.802017044 0.458886528108004 87.2340804479003 55.7542817170378 -89.6956564539857 2268685.29344986 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 15:35:36 2021-Apr-13 15:35
2055-Jan-14 07:56 00:01 Jupiter 1.75748065731781 1.75748026863762 1.7574810459977 1.62576730197445 1.29584488350967 2471646.830774947 1.13279036071046 85.7445251697096 54.0262132509585 -89.7424738865303 2264817.3058788 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 15:35:36 2021-Apr-13 15:35
2102-Aug-05 12:13 00:02 Jupiter 1.75207515313603 1.75207475816951 1.75207554810215 1.63011536176436 1.30015264209342 2489016.009325909 2.45843414423358 85.4677458450445 63.8540575662068 -85.9935493225585 2099505.98893294 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 15:35:36 2021-Apr-13 15:35
2150-Feb-23 22:46 00:04 Jupiter 1.74493280979718 1.74493241088057 1.74493320871339 1.63384770124234 1.30331173924788 2506385.448476325 3.85661759313144 91.6897159873962 79.6446302741986 -45.1933995601773 1736891.79558647 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 15:35:36 2021-Apr-13 15:35
2197-Sep-14 14:21 00:05 Jupiter 1.74322319141598 1.74322277358683 1.74322360924463 1.65235295019244 1.32607742202497 2523755.097618915 5.33769229261301 118.3350156496 79.5728979558212 -23.153514909741 1347431.82475371 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 15:35:36 2021-Apr-13 15:35

Alternate Designations
 1998 SA9 = 2005 AK55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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