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146471 (2001 RY78)
Classification: Main-belt Asteroid          SPK-ID: 2146471
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .184616006732166 3.7431e-08  
a 2.742870244139591 1.2103e-08 au
q 2.236492492682058 1.0517e-07 au
i 11.09113983795368 4.0262e-06 deg
node 78.6952860554363 2.0819e-05 deg
peri 336.9902885981355 2.4777e-05 deg
M 75.61024603355055 1.1142e-05 deg
tp 2458852.014692920471
(2020-Jan-03.51469292)
5.1287e-05 TDB
period 1659.228968689806
4.54
1.0982e-05
3.007e-08
d
yr
n .2169682465731481 1.4361e-09 deg/d
Q 3.249247995597123 1.4338e-08 au
  Orbit Determination Parameters
   # obs. used (total)      938  
   data-arc span      7067 days (19.35 yr)  
   first obs. used      2001-09-10  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50151  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 10:29:48  

Additional Information
 Earth MOID = 1.25264 au 
 Jupiter MOID = 2.10619 au 
 T_jup = 3.298 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457360.5 (2015-Dec-04.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1817232946588676 3.7198e-08  
q 2.245251618794537 1.0407e-07 au
tp 2457189.001576418864
(2015-Jun-15.50157642)
5.4489e-05 TDB
node 78.86222694774189 2.0875e-05 deg
peri 336.3367906978275 2.5041e-05 deg
i 11.07263780136029 4.0183e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      938  
   data-arc span      7067 days (19.35 yr)  
   first obs. used      2001-09-10  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50151  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 10:29:48  

Additional Information
 Jupiter MOID = 2.10619 au 
 T_jup = 3.298 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.383715768187923E-15 -3.854292115335504E-15 -3.852556699500715E-13 -1.101114977915315E-14 -8.779651517669897E-14 -3.897218616250639E-15
q -3.854292115335504E-15 1.082956869487886E-14 9.488319387760447E-13 3.183472977932574E-14 2.157640646429437E-13 1.109814507212664E-14
tp -3.852556699500715E-13 9.488319387760447E-13 2.969041560370015E-9 7.515810433852764E-12 7.704974854635591E-10 4.000261579566995E-12
node -1.101114977915315E-14 3.183472977932574E-14 7.515810433852764E-12 4.357546486195851E-10 -4.253895899220662E-10 -2.12720455668672E-11
peri -8.779651517669897E-14 2.157640646429437E-13 7.704974854635591E-10 -4.253895899220662E-10 6.270563188348457E-10 2.187923734044455E-11
i -3.897218616250639E-15 1.109814507212664E-14 4.000261579566995E-12 -2.12720455668672E-11 2.187923734044455E-11 1.614684490134407E-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 15.14   n/a E2021B55  

146471 (2001 RY78)          Discovered 2001-Sep-10 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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