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48738 (1997 ER16)
Classification: Main-belt Asteroid          SPK-ID: 2048738
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 .1912367205772884 4.9453e-08  
a 2.420112708988043 1.0131e-08 au
q 1.957298291093752 1.2008e-07 au
i .8825754035594637 5.7362e-06 deg
node 2.281394973430355 0.00025066 deg
peri 331.9182356485779 0.00025093 deg
M 173.0712634634186 1.1995e-05 deg
tp 2457939.389159171388
(2017-Jul-04.88915917)
4.5395e-05 TDB
period 1375.155516493963
3.76
8.6348e-06
2.364e-08
d
yr
n .2617885727701841 1.6438e-09 deg/d
Q 2.882927126882334 1.2068e-08 au
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      8037 days (22.00 yr)  
   first obs. used      1997-03-05  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56218  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:47:40  

Additional Information
 Earth MOID = .946419 au 
 Jupiter MOID = 2.48219 au 
 T_jup = 3.489 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456728.5 (2014-Mar-12.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1906380023426774 4.9204e-08  
q 1.958722483473615 1.1931e-07 au
tp 2456560.408349743629
(2013-Sep-24.90834974)
4.5752e-05 TDB
node 2.290956964921269 0.00025037 deg
peri 331.2803538455124 0.00025065 deg
i .8847013646390435 5.7283e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      8037 days (22.00 yr)  
   first obs. used      1997-03-05  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56218  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:47:40  

Additional Information
 Jupiter MOID = 2.48219 au 
 T_jup = 3.489 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.421058853852806E-15 -5.857125094582249E-15 9.607610992762148E-13 1.331756372404368E-15 2.201486731241312E-13 -3.070620963041221E-16
q -5.857125094582249E-15 1.423603321818909E-14 -2.362196064607611E-12 -5.04125435536754E-15 -5.390877804767376E-13 7.700090113229793E-16
tp 9.607610992762148E-13 -2.362196064607611E-12 2.09328810126967E-9 -1.066218362852605E-12 5.469961556694183E-10 -3.885470273915101E-13
node 1.331756372404368E-15 -5.04125435536754E-15 -1.066218362852605E-12 6.268742562731852E-8 -6.267965142126426E-8 5.089788476054966E-11
peri 2.201486731241312E-13 -5.390877804767376E-13 5.469961556694183E-10 -6.267965142126426E-8 6.282540747889034E-8 -5.098733028295504E-11
i -3.070620963041221E-16 7.700090113229793E-16 -3.885470273915101E-13 5.089788476054966E-11 -5.098733028295504E-11 3.281392407089243E-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 16.3   n/a MPO436124  

48738 (1997 ER16)          Discovered 1997-Mar-05 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 ER16 = 1997 GS26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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