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JPL Small-Body Database Browser
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18951 (2000 QQ98)
Classification: Main-belt Asteroid          SPK-ID: 2018951
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .2165958934790315 3.4881e-08  
a 2.465070081335186 9.3248e-09 au
q 1.931146024579963 8.6275e-08 au
i 3.168017902753923 4.1844e-06 deg
node 104.9819714182788 6.3677e-05 deg
peri 320.2558583515651 6.4316e-05 deg
M 344.5043345712137 1.0402e-05 deg
tp 2459061.348526090641
(2020-Jul-30.84852609)
4.1041e-05 TDB
period 1413.651417120618
3.87
8.0213e-06
2.196e-08
d
yr
n .2546596676097581 1.445e-09 deg/d
Q 2.99899413809041 1.1345e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1045  
   data-arc span      17747 days (48.59 yr)  
   first obs. used      1971-03-24  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52436  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:16:27  

Additional Information
 Earth MOID = .946082 au 
 Jupiter MOID = 2.31985 au 
 T_jup = 3.453 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456930.5 (2014-Sep-30.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2161537263095082 3.4606e-08  
q 1.932631021137619 8.5467e-08 au
tp 2456229.323781724896
(2012-Oct-28.82378173)
3.4328e-05 TDB
node 105.0793652855238 6.3849e-05 deg
peri 319.5092972034128 6.4491e-05 deg
i 3.164500030699616 4.1769e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1045  
   data-arc span      17747 days (48.59 yr)  
   first obs. used      1971-03-24  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52436  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 04:16:27  

Additional Information
 Jupiter MOID = 2.31985 au 
 T_jup = 3.453 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.197582772378574E-15 -2.946549908626277E-15 2.463690616290505E-13 -2.766241293802847E-16 6.99022391000969E-14 2.412948909699008E-16
q -2.946549908626277E-15 7.30461665738103E-15 -5.459532504194362E-13 -5.912179284233221E-16 -1.498323930058812E-13 -5.191104034337467E-16
tp 2.463690616290505E-13 -5.459532504194362E-13 1.178406628042168E-9 -5.73344183825967E-12 3.212904004689108E-10 1.073907363110843E-13
node -2.766241293802847E-16 -5.912179284233221E-16 -5.73344183825967E-12 4.07664777172326E-9 -4.071551574019791E-9 6.456000890235301E-13
peri 6.99022391000969E-14 -1.498323930058812E-13 3.212904004689108E-10 -4.071551574019791E-9 4.159109880118427E-9 -6.204376758419708E-13
i 2.412948909699008E-16 -5.191104034337467E-16 1.073907363110843E-13 6.456000890235301E-13 -6.204376758419708E-13 1.744643987208747E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO449090  
diameter diameter 3.256 km 0.722 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.154   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

18951 (2000 QQ98)          Discovered 2000-Aug-28 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 QQ98 = 1998 EO10 = 2268 T-1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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