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JPL Small-Body Database Browser
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49193 (1998 SM91)
Classification: Main-belt Asteroid          SPK-ID: 2049193
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05762879388544289 4.6221e-08  
a 2.361368472572022 9.603e-09 au
q 2.225285655578586 1.0996e-07 au
i 4.822008011378919 4.9885e-06 deg
node 312.9654285774923 4.7213e-05 deg
peri 190.2588447066195 5.8487e-05 deg
M 114.7322951403906 3.3888e-05 deg
tp 2458178.096752625782
(2018-Feb-28.59675263)
0.00012455 TDB
period 1325.391153978449
3.63
8.085e-06
2.214e-08
d
yr
n .2716179287294787 1.6569e-09 deg/d
Q 2.497451289565458 1.0156e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      7167 days (19.62 yr)  
   first obs. used      1998-09-26  
   last obs. used      2018-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55675  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 00:37:23  

Additional Information
 Earth MOID = 1.23838 au 
 Jupiter MOID = 2.50523 au 
 T_jup = 3.544 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO337651  
diameter diameter 2.262 km 0.335 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.66 h n/a LCDB (Rev. 2019-January); 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:
[Szabo, R.; Pal, A.; Sarneczky, K.; Szabo, Gy.M.; et al. (2016) Astron. Astrophys. 596, A40.]
geometric albedo albedo 0.415   0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49193 (1998 SM91)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SM91 = 2000 CJ36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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