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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1944634824890616 7.1087e-08  
a 2.583700019045241 1.3291e-08 au
q 2.081264715634649 1.9082e-07 au
i 4.616072535064127 4.8724e-06 deg
node 14.04896133552172 5.5095e-05 deg
peri 126.4503064188211 5.6353e-05 deg
M 352.9580866897579 1.1306e-05 deg
tp 2459030.172199007570
(2020-Jun-29.67219901)
4.7736e-05 TDB
period 1516.916095401084
4.15
1.1705e-05
3.205e-08
d
yr
n .2373236074766635 1.8312e-09 deg/d
Q 3.086135322455834 1.5875e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1477  
   data-arc span      7887 days (21.59 yr)  
   first obs. used      1998-10-10  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51677  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:33:33  

Additional Information
 Earth MOID = 1.09802 au 
 Jupiter MOID = 1.94317 au 
 T_jup = 3.392 
[ 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 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. 2020-October); 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 1.98972478015576 1.98972380381073 1.98972575650192 1.96586394750881 1.73586416530185 2420314.496790166 1.94984441180823 122.516311079113 33.251402310382 86.4733411051049 2293388.7808267 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 23:33:36 2020-Nov-12 23:33
1927-May-27 20:08 00:02 Jupiter 1.97749889171824 1.97749836198171 1.97749942145454 2.33651447247808 2.14537629796082 2425028.339187481 1.69454788183624 154.834973298111 17.9929496056871 89.345872805817 1712706.01102464 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 23:33:36 2020-Nov-12 23:33
1997-Aug-31 19:46 < 00:01 Jupiter 1.97713610458517 1.97713555337872 1.9771366557915 1.98655686855972 1.75772312441445 2450692.323401220 0.317921782995814 85.4188393744101 20.9726649208782 69.8150119692174 2210572.61458064 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 23:33:36 2020-Nov-12 23:33
2010-Jul-29 22:29 < 00:01 Jupiter 1.98660107671956 1.98660053228816 1.98660162115131 2.41030705638192 2.22639725166969 2455407.437036674 0.169686359401854 82.6294802260927 15.6250948342471 -87.4921283994363 1923642.58956153 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 23:33:36 2020-Nov-12 23:33
2080-Nov-03 04:45 00:01 Jupiter 1.95564443385173 1.95564400788509 1.95564485981825 1.99135439098464 1.76047114504237 2481071.697941968 1.42537372528015 89.2171599524591 45.1901780692222 80.7023651680426 1554963.87139231 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 23:33:36 2020-Nov-12 23:33
2164-Jan-07 05:18 00:03 Jupiter 1.95014824884085 1.95014777819481 1.95014871948789 2.03208869422613 1.80574346472681 2511450.720638591 3.08328656718871 168.115730814284 48.9307718428815 -80.0452973597965 1426623.34126285 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 23:33:36 2020-Nov-12 23:33

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