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46981 (1998 SQ160)
Classification: Main-belt Asteroid          SPK-ID: 2046981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1007067293774172 3.6465e-08  
a 2.779330896573588 1.5067e-08 au
q 2.499433572122057 1.0649e-07 au
i 4.280655934705196 4.4307e-06 deg
node 58.80306850482663 5.0355e-05 deg
peri 281.9933799781577 5.4924e-05 deg
M 358.6313329939255 2.2733e-05 deg
tp 2459402.934341498489
(2021-Jul-07.43434150)
0.00010688 TDB
period 1692.422575524487
4.63
1.3762e-05
3.768e-08
d
yr
n .2127128326023628 1.7297e-09 deg/d
Q 3.059228221025119 1.6584e-08 au
  Orbit Determination Parameters
   # obs. used (total)      939  
   data-arc span      8360 days (22.89 yr)  
   first obs. used      1998-09-18  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57415  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:53:52  

Additional Information
 Earth MOID = 1.49466 au 
 Jupiter MOID = 2.29241 au 
 T_jup = 3.322 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457191.5 (2015-Jun-18.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1001239306185903 3.6545e-08  
q 2.499207612376721 1.064e-07 au
tp 2457717.675495771054
(2016-Nov-25.17549577)
0.00010583 TDB
node 58.8811369431132 5.0283e-05 deg
peri 283.256435231253 5.49e-05 deg
i 4.284302861028407 4.4343e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      939  
   data-arc span      8360 days (22.89 yr)  
   first obs. used      1998-09-18  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57415  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:53:52  

Additional Information
 Jupiter MOID = 2.29241 au 
 T_jup = 3.322 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.335540177721599E-15 -3.861526486564142E-15 4.885926264529854E-13 4.287865307416004E-15 1.330127153523106E-13 -2.874938713030573E-16
q -3.861526486564142E-15 1.132118357128068E-14 -1.271858713733512E-12 -1.392859175515497E-14 -3.658999620777277E-13 1.194081295055923E-15
tp 4.885926264529854E-13 -1.271858713733512E-12 1.119962955142423E-8 7.368409799603019E-12 2.343562421207785E-9 8.485894300314134E-13
node 4.287865307416004E-15 -1.392859175515497E-14 7.368409799603019E-12 2.528339379153346E-9 -2.519225523526996E-9 -2.568992047981369E-11
peri 1.330127153523106E-13 -3.658999620777277E-13 2.343562421207785E-9 -2.519225523526996E-9 3.013961272908852E-9 2.577681832632454E-11
i -2.874938713030573E-16 1.194081295055923E-15 8.485894300314134E-13 -2.568992047981369E-11 2.577681832632454E-11 1.966274321739498E-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 14.93   n/a MPO614063  
diameter diameter 3.544 km 1.427 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.185   0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46981 (1998 SQ160)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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