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17725 (1997 YQ7)
Classification: Main-belt Asteroid          SPK-ID: 2017725
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1660374679050118 2.2514e-08  
a 2.68942439414369 1.1441e-08 au
q 2.242879177618101 5.9815e-08 au
i 11.48172651670245 6.815e-07 deg
node 336.3656504329508 4.4669e-06 deg
peri 86.66940943558687 1.1382e-05 deg
M 121.6550121661301 7.8424e-06 deg
tp 2458656.103979010062
(2019-Jun-21.60397901)
3.3784e-05 TDB
period 1610.969939230675
4.41
1.028e-05
2.815e-08
d
yr
n .223467856992986 1.426e-09 deg/d
Q 3.135969610669279 1.3341e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1911  
   data-arc span      16983 days (46.50 yr)  
   first obs. used      1974-09-22  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4297  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:35:38  

Additional Information
 Earth MOID = 1.28987 au 
 Jupiter MOID = 2.27445 au 
 T_jup = 3.324 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457272.5 (2015-Sep-07.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1638363168651006 2.2158e-08  
q 2.25044357212923 5.8636e-08 au
tp 2457045.002192719711
(2015-Jan-22.50219272)
3.293e-05 TDB
node 336.425652444656 4.4622e-06 deg
peri 86.92976845391814 1.1552e-05 deg
i 11.48877420614979 6.8165e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1911  
   data-arc span      16983 days (46.50 yr)  
   first obs. used      1974-09-22  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4297  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:35:38  

Additional Information
 Jupiter MOID = 2.27445 au 
 T_jup = 3.324 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.909659129520637E-16 -1.282341612308099E-15 -6.145737913837866E-13 1.36633550791591E-14 -1.988674328355536E-13 -3.32775112373359E-15
q -1.282341612308099E-15 3.438174777788717E-15 1.654833025641174E-12 -3.594109028249491E-14 5.349098061628363E-13 8.849575202142935E-15
tp -6.145737913837866E-13 1.654833025641174E-12 1.084417460566894E-9 -3.26896277103633E-11 3.506351497208286E-10 6.041001377847777E-12
node 1.36633550791591E-14 -3.594109028249491E-14 -3.26896277103633E-11 1.991120190721736E-11 -2.963242127763537E-11 -8.233321615309109E-13
peri -1.988674328355536E-13 5.349098061628363E-13 3.506351497208286E-10 -2.963242127763537E-11 1.334435653483504E-10 2.553132984307315E-12
i -3.32775112373359E-15 8.849575202142935E-15 6.041001377847777E-12 -8.233321615309109E-13 2.553132984307315E-12 4.646440412157671E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.37   n/a E2021B10  
diameter diameter 6.427 km 1.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.352   0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

17725 (1997 YQ7)          Discovered 1997-Dec-27 by Kobayashi, T. at Oizumi
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 YQ7 = 1974 SS3 = 1979 YP2 = 1983 TX1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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