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17872 (1998 SP22)
Classification: Main-belt Asteroid          SPK-ID: 2017872
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06788546279045517 2.1635e-08  
a 2.731842359565825 1.0483e-08 au
q 2.54638997671613 5.6694e-08 au
i 6.764483052880867 7.5297e-07 deg
node 1.818541352895004 9.3981e-06 deg
peri 232.3072373061638 1.358e-05 deg
M 102.1526618740323 1.3696e-05 deg
tp 2458732.518089286899
(2019-Sep-06.01808929)
6.2687e-05 TDB
period 1649.232479761188
4.52
9.4928e-06
2.599e-08
d
yr
n .2182833556929032 1.2564e-09 deg/d
Q 2.917294742415521 1.1194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2392  
   data-arc span      12376 days (33.88 yr)  
   first obs. used      1987-02-25  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45857  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:16:36  

Additional Information
 Earth MOID = 1.54144 au 
 Jupiter MOID = 2.08397 au 
 T_jup = 3.340 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.98   n/a E2021B10  
diameter diameter 6.670 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.302   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17872 (1998 SP22)          Discovered 1998-Sep-23 by Visnjan at Visnjan
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SP22 = 1987 DB1 = 1999 XY196 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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