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74295 (1998 SR147)
Classification: Main-belt Asteroid          SPK-ID: 2074295
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1383147789722352 3.7848e-08  
a 2.76745587074685 1.4175e-08 au
q 2.384675823669085 1.088e-07 au
i 9.468342992473174 4.745e-06 deg
node 192.04399400201 2.4176e-05 deg
peri 101.2824750549414 3.067e-05 deg
M 331.6124817397396 1.7404e-05 deg
tp 2459133.100270296904
(2020-Oct-10.60027030)
8.126e-05 TDB
period 1681.587550881859
4.60
1.292e-05
3.537e-08
d
yr
n .2140834117207925 1.6448e-09 deg/d
Q 3.150235917824615 1.6136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      8006 days (21.92 yr)  
   first obs. used      1998-09-18  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53753  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:15  

Additional Information
 Earth MOID = 1.3915 au 
 Jupiter MOID = 2.10041 au 
 T_jup = 3.305 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457011.5 (2014-Dec-20.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1368271181065251 3.7874e-08  
q 2.388532638452074 1.0864e-07 au
tp 2457452.203889936350
(2016-Mar-04.70388994)
8.3646e-05 TDB
node 192.0696001368751 2.4171e-05 deg
peri 101.3362645457818 3.0797e-05 deg
i 9.46835994519704 4.7452e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      8006 days (21.92 yr)  
   first obs. used      1998-09-18  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53753  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:15  

Additional Information
 Jupiter MOID = 2.10041 au 
 T_jup = 3.305 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.434446964125927E-15 -4.089943981989939E-15 7.802444493706456E-14 2.738866383480602E-15 7.465072563165586E-14 -3.61423089482763E-15
q -4.089943981989939E-15 1.180302715095592E-14 -4.074350601065934E-13 -6.071983669535851E-15 -2.659765642684485E-13 1.164685136948547E-14
tp 7.802444493706456E-14 -4.074350601065934E-13 6.996644564048079E-9 -1.353340651322317E-11 1.606699599172082E-9 3.698719085265662E-12
node 2.738866383480602E-15 -6.071983669535851E-15 -1.353340651322317E-11 5.842605875057231E-10 -5.786517742964924E-10 1.321198188795461E-11
peri 7.465072563165586E-14 -2.659765642684485E-13 1.606699599172082E-9 -5.786517742964924E-10 9.484772208251495E-10 -1.23500905829579E-11
i -3.61423089482763E-15 1.164685136948547E-14 3.698719085265662E-12 1.321198188795461E-11 -1.23500905829579E-11 2.251701531926764E-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 14.9   n/a MPO468690  

74295 (1998 SR147)          Discovered 1998-Sep-20 by Elst, E. W. at La Silla
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SR147 = 2001 FT43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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