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91212 (1998 YQ7)
Classification: Main-belt Asteroid          SPK-ID: 2091212
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1471199947160047 8.3031e-08  
a 2.326541682435474 9.7557e-09 au
q 1.984260882409003 1.971e-07 au
i 27.03145215978817 7.2325e-06 deg
node 21.49501509856149 8.3172e-06 deg
peri 147.782034097531 1.8682e-05 deg
M 70.97387962152719 1.4329e-05 deg
tp 2459140.958918579648
(2020-Oct-18.45891858)
5.1343e-05 TDB
period 1296.178112312513
3.55
8.1527e-06
2.232e-08
d
yr
n .2777396073736529 1.7469e-09 deg/d
Q 2.668822482461946 1.1191e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1167  
   data-arc span      8171 days (22.37 yr)  
   first obs. used      1998-12-24  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48272  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:39:58  

Additional Information
 Earth MOID = 1.01027 au 
 Jupiter MOID = 2.32632 au 
 T_jup = 3.415 
[ 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 14.96   n/a E2021B10  
diameter diameter 4.283 km 0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.151   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91212 (1998 YQ7)          Discovered 1998-Dec-24 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 YQ7 = 2001 RF79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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