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85855 (1999 AN15)
Classification: Main-belt Asteroid          SPK-ID: 2085855
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08696913053525752 3.9552e-08  
a 2.348144578650098 9.4998e-09 au
q 2.14392848627382 9.3675e-08 au
i 1.781106398521127 3.7094e-06 deg
node 315.0202995301255 0.00015229 deg
peri 218.0413505240023 0.00015423 deg
M 291.6269804792767 2.5958e-05 deg
tp 2459250.113423203099
(2021-Feb-04.61342320)
9.5344e-05 TDB
period 1314.273275964935
3.60
7.9757e-06
2.184e-08
d
yr
n .2739156357993273 1.6623e-09 deg/d
Q 2.552360671026376 1.0326e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1092  
   data-arc span      7709 days (21.11 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54636  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:40:00  

Additional Information
 Earth MOID = 1.14926 au 
 Jupiter MOID = 2.41459 au 
 T_jup = 3.554 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456614.5 (2013-Nov-18.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08650137211226419 3.9693e-08  
q 2.144539221687725 9.3945e-08 au
tp 2456622.402576491725
(2013-Nov-25.90257649)
9.0605e-05 TDB
node 315.120764263976 0.00015225 deg
peri 218.1148123340077 0.00015419 deg
i 1.781533843698675 3.7103e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1092  
   data-arc span      7709 days (21.11 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54636  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:40:00  

Additional Information
 Jupiter MOID = 2.41459 au 
 T_jup = 3.554 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.575524574130676E-15 -3.713024130309307E-15 7.957998856163959E-13 -1.262612669951346E-14 2.51903710566185E-13 6.97708024929659E-17
q -3.713024130309307E-15 8.825661078412279E-15 -1.684494168288236E-12 3.033860448950986E-14 -5.442656299398224E-13 -1.203331730883077E-16
tp 7.957998856163959E-13 -1.684494168288236E-12 8.209297017696521E-9 -4.83486164320689E-12 2.236433269490642E-9 3.834328654290401E-13
node -1.262612669951346E-14 3.033860448950986E-14 -4.83486164320689E-12 2.317890805590008E-8 -2.316877356458391E-8 6.593013668567349E-11
peri 2.51903710566185E-13 -5.442656299398224E-13 2.236433269490642E-9 -2.316877356458391E-8 2.377451204683111E-8 -6.580699507783574E-11
i 6.97708024929659E-17 -1.203331730883077E-16 3.834328654290401E-13 6.593013668567349E-11 -6.580699507783574E-11 1.376669139270037E-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 15.4   n/a MPO502667  
diameter diameter 2.047 km 0.580 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.384   0.251 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85855 (1999 AN15)          Discovered 1999-Jan-09 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1999 AN15 = 2001 TO100 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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