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49256 (1998 TA31)
Classification: Main-belt Asteroid          SPK-ID: 2049256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1944634813167618 7.1141e-08  
a 2.583700019533912 1.3355e-08 au
q 2.081264719057162 1.91e-07 au
i 4.616072683940448 4.8845e-06 deg
node 14.04896131698293 5.5095e-05 deg
peri 126.4503065613301 5.6355e-05 deg
M 352.9580862688273 1.1359e-05 deg
tp 2459030.172200789645
(2020-Jun-29.67220079)
4.7961e-05 TDB
period 1516.91609583144
4.15
1.1761e-05
3.22e-08
d
yr
n .2373236074093338 1.8401e-09 deg/d
Q 3.086135320010662 1.5952e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1469  
   data-arc span      7867 days (21.54 yr)  
   first obs. used      1998-10-10  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:51:37  

Additional Information
 Earth MOID = 1.09802 au 
 Jupiter MOID = 1.94317 au 
 T_jup = 3.392 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456250.5 (2012-Nov-19.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1939608484347049 7.1471e-08  
q 2.08278079499737 1.9179e-07 au
tp 2455997.260098262640
(2012-Mar-10.76009826)
4.3438e-05 TDB
node 14.09016550907266 5.5077e-05 deg
peri 126.6106496055256 5.6328e-05 deg
i 4.617226034664779 4.8847e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1469  
   data-arc span      7867 days (21.54 yr)  
   first obs. used      1998-10-10  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:51:37  

Additional Information
 Jupiter MOID = 1.94317 au 
 T_jup = 3.392 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.108162021109259E-15 -1.369499989749347E-14 6.331417498520014E-13 3.009155521508374E-14 3.484711312045853E-13 -8.587423988958466E-15
q -1.369499989749347E-14 3.678247046352489E-14 -1.665255043483175E-12 -8.255358498837871E-14 -9.24017916305093E-13 2.330955521063535E-14
tp 6.331417498520014E-13 -1.665255043483175E-12 1.886871041166896E-9 -2.604928422260557E-12 5.193261643456795E-10 1.007035316075665E-12
node 3.009155521508374E-14 -8.255358498837871E-14 -2.604928422260557E-12 3.033470229085428E-9 -3.022975485746401E-9 -7.819914623107836E-11
peri 3.484711312045853E-13 -9.24017916305093E-13 5.193261643456795E-10 -3.022975485746401E-9 3.172803125139771E-9 7.78195937500637E-11
i -8.587423988958466E-15 2.330955521063535E-14 1.007035316075665E-12 -7.819914623107836E-11 7.78195937500637E-11 2.386024120200536E-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 14.2   n/a MPO359070  
diameter diameter 5.514 km 0.212 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 21.864 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.146   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49256 (1998 TA31)          Discovered 1998-Oct-10 by LONEOS at Anderson Mesa
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ 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
1914-Jun-30 23:55 00:02 Jupiter 1.98972479132133 1.98972381170423 1.98972577093968 1.9658639730519 1.73586419560555 2420314.496776959 1.95988801679961 122.919292743351 33.3114178344998 86.5534302740725 2289716.54959953 T 22 CATAB v2.0f-lin.ifort 2020-May-20 09:51:51 2020-May-20 09:51
1927-May-27 20:08 00:02 Jupiter 1.97749888720674 1.97749835606883 1.97749941834443 2.33651439436219 2.14537621242985 2425028.339162840 1.70320236010487 155.309567325984 18.0249224767223 89.3457560402786 1709208.76124133 T 22 CATAB v2.0f-lin.ifort 2020-May-20 09:51:51 2020-May-20 09:51
1997-Aug-31 19:46 < 00:01 Jupiter 1.97713610891001 1.97713555707723 1.97713666074267 1.98655689437866 1.75772315412783 2450692.323400408 0.319102832964597 85.4868059494583 21.0212229346541 69.8415952723785 2207428.19904656 T 22 CATAB v2.0f-lin.ifort 2020-May-20 09:51:51 2020-May-20 09:51
2010-Jul-29 22:29 < 00:01 Jupiter 1.98660107746971 1.98660053301922 1.98660162192054 2.41030700867083 2.22639720008977 2455407.437027464 0.169691241497218 82.7018233839494 15.6523927275525 -87.4774963777489 1920321.8084766 T 22 CATAB v2.0f-lin.ifort 2020-May-20 09:51:51 2020-May-20 09:51
2080-Nov-03 04:45 00:01 Jupiter 1.95564443301996 1.95564400680798 1.95564485923183 1.99135442515353 1.76047118358782 2481071.697961126 1.43251109501409 89.3384591818503 45.3361777501744 80.8618114587904 1552385.11366496 T 22 CATAB v2.0f-lin.ifort 2020-May-20 09:51:51 2020-May-20 09:51
2164-Jan-07 05:18 00:03 Jupiter 1.95014824607966 1.95014777433529 1.95014871782515 2.03208873451944 1.80574350973021 2511450.720665852 3.09902468568043 168.89347842347 48.9673170109646 -79.9925159526869 1425865.02901548 T 22 CATAB v2.0f-lin.ifort 2020-May-20 09:51:51 2020-May-20 09:51

Alternate Designations
 1998 TA31 = 2000 GB58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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