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100612 (1997 SL25)
Classification: Main-belt Asteroid          SPK-ID: 2100612
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .200289226748749 3.0969e-08  
a 2.699602950076618 1.2466e-08 au
q 2.15890156267713 8.505e-08 au
i 13.37303071880294 3.8216e-06 deg
node 178.7029483650794 1.5675e-05 deg
peri 175.8770442464628 1.9512e-05 deg
M 49.60284432295271 9.6048e-06 deg
tp 2458777.270108752095
(2019-Oct-20.77010875)
4.3318e-05 TDB
period 1620.12404623457
4.44
1.1222e-05
3.072e-08
d
yr
n .2222052075806776 1.5391e-09 deg/d
Q 3.240304337476105 1.4963e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      8952 days (24.51 yr)  
   first obs. used      1996-05-14  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50176  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:28:21  

Additional Information
 Earth MOID = 1.15467 au 
 Jupiter MOID = 2.21414 au 
 T_jup = 3.301 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457344.5 (2015-Nov-18.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2029109148874164 3.1166e-08  
q 2.15036940446383 8.5827e-08 au
tp 2457156.108680675859
(2015-May-13.60868068)
4.4106e-05 TDB
node 178.804756764971 1.5635e-05 deg
peri 175.5178234686343 1.9321e-05 deg
i 13.39592591391935 3.828e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      8952 days (24.51 yr)  
   first obs. used      1996-05-14  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50176  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:28:21  

Additional Information
 Jupiter MOID = 2.21414 au 
 T_jup = 3.301 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.712912502556515E-16 -2.657055764111058E-15 1.868134343240208E-13 2.38624242671173E-16 4.408318460045387E-14 -2.255524485381469E-15
q -2.657055764111058E-15 7.36632348638596E-15 -6.46904792091941E-13 -3.027024489307034E-15 -1.507959173767836E-13 6.301480112697828E-15
tp 1.868134343240208E-13 -6.46904792091941E-13 1.945344534861686E-9 9.821729020235018E-12 5.135820125166641E-10 -8.568434788407284E-13
node 2.38624242671173E-16 -3.027024489307034E-15 9.821729020235018E-12 2.444541719983675E-10 -2.346158198425691E-10 8.999462949470729E-12
peri 4.408318460045387E-14 -1.507959173767836E-13 5.135820125166641E-10 -2.346158198425691E-10 3.732976726069674E-10 -8.937300084106493E-12
i -2.255524485381469E-15 6.301480112697828E-15 -8.568434788407284E-13 8.999462949470729E-12 -8.937300084106493E-12 1.465349991442731E-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 MPO449610  
diameter diameter 2.830 km 0.662 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.242   0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100612 (1997 SL25)          Discovered 1997-Sep-29 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1997 SL25 = 2003 AT92 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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