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48786 (1997 SH4)
Classification: Main-belt Asteroid          SPK-ID: 2048786
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .1652328419631749 5.4484e-08  
a 2.949434002120978 1.8612e-08 au
q 2.462090639767708 1.6249e-07 au
i 4.061170279765789 5.1085e-06 deg
node 223.5993318362904 7.6481e-05 deg
peri 129.4050265439628 7.7551e-05 deg
M 181.0403127899196 1.4956e-05 deg
tp 2459920.227478678701
(2022-Dec-06.72747868)
8.1415e-05 TDB
period 1850.147915913892
5.07
1.7512e-05
4.795e-08
d
yr
n .1945790371156221 1.8418e-09 deg/d
Q 3.436777364474248 2.1687e-08 au
  Orbit Determination Parameters
   # obs. used (total)      914  
   data-arc span      9487 days (25.97 yr)  
   first obs. used      1994-02-12  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53137  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:13:53  

Additional Information
 Earth MOID = 1.45957 au 
 Jupiter MOID = 2.02965 au 
 T_jup = 3.246 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456752.5 (2014-Apr-05.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1608090911526838 5.4104e-08  
q 2.481386956046925 1.6049e-07 au
tp 2456215.173969043884
(2012-Oct-14.67396904)
7.1495e-05 TDB
node 223.9519511916326 7.6575e-05 deg
peri 129.0630045111311 7.7736e-05 deg
i 4.054113161608631 5.0944e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      914  
   data-arc span      9487 days (25.97 yr)  
   first obs. used      1994-02-12  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53137  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:13:53  

Additional Information
 Jupiter MOID = 2.02965 au 
 T_jup = 3.246 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.927191174708814E-15 -8.641515270683682E-15 -1.373946281975755E-13 -4.515069200781238E-15 1.519970838519531E-14 -8.071116333284528E-16
q -8.641515270683682E-15 2.575635549769656E-14 5.458334509351842E-13 1.989203818855753E-14 -1.605216351458757E-14 1.801958870242006E-15
tp -1.373946281975755E-13 5.458334509351842E-13 5.111586357815064E-9 1.023738433991595E-11 1.001122978064334E-9 1.400249774102165E-13
node -4.515069200781238E-15 1.989203818855753E-14 1.023738433991595E-11 5.86379481044934E-9 -5.846564390592262E-9 -1.021741821347879E-10
peri 1.519970838519531E-14 -1.605216351458757E-14 1.001122978064334E-9 -5.846564390592262E-9 6.042962755538042E-9 1.019288251599781E-10
i -8.071116333284528E-16 1.801958870242006E-15 1.400249774102165E-13 -1.021741821347879E-10 1.019288251599781E-10 2.595330535321664E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO502481  
diameter diameter 8.071 km 0.208 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.180 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 0.052   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48786 (1997 SH4)          Discovered 1997-Sep-27 by Kobayashi, T. at Oizumi
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 SH4 = 2001 KV26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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