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249610 (1999 RJ176)
Classification: Main-belt Asteroid          SPK-ID: 2249610
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2839730694777888 4.1889e-08  
a 2.365355801591866 1.2407e-08 au
q 1.693658454206729 1.0067e-07 au
i 5.032016966682008 5.154e-06 deg
node 331.8593656525209 5.7566e-05 deg
peri 48.89815599136959 5.8719e-05 deg
M 232.9069307264223 1.3918e-05 deg
tp 2459469.596843045678
(2021-Sep-12.09684305)
5.4406e-05 TDB
period 1328.749588484073
3.64
1.0454e-05
2.862e-08
d
yr
n .2709314103424953 2.1316e-09 deg/d
Q 3.037053148977004 1.593e-08 au
  Orbit Determination Parameters
   # obs. used (total)      353  
   data-arc span      7595 days (20.79 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54643  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:16:35  

Additional Information
 Earth MOID = .701156 au 
 Jupiter MOID = 2.44987 au 
 T_jup = 3.488 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457296.5 (2015-Oct-01.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2827140158433667 4.1757e-08  
q 1.698136438706854 1.0022e-07 au
tp 2456811.497298307021
(2014-Jun-02.99729831)
3.9436e-05 TDB
node 331.9087917132947 5.7487e-05 deg
peri 48.93297951435833 5.8661e-05 deg
i 5.034156719721088 5.155e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      353  
   data-arc span      7595 days (20.79 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54643  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:16:35  

Additional Information
 Jupiter MOID = 2.44987 au 
 T_jup = 3.488 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.74364269342432E-15 -4.168951912302349E-15 -1.271441641073341E-13 3.176197640158781E-14 -9.672384274440802E-14 -1.644509509320207E-15
q -4.168951912302349E-15 1.004455604505939E-14 5.094185100842545E-13 -8.043278565798818E-14 2.917420925400976E-13 4.238197826196508E-15
tp -1.271441641073341E-13 5.094185100842545E-13 1.555216014718019E-9 -2.564463848367983E-11 4.794061712049658E-10 2.888821605488909E-13
node 3.176197640158781E-14 -8.043278565798818E-14 -2.564463848367983E-11 3.304701413417449E-9 -3.299742087197772E-9 -2.306960946010832E-11
peri -9.672384274440802E-14 2.917420925400976E-13 4.794061712049658E-10 -3.299742087197772E-9 3.441127456501892E-9 2.309355497522416E-11
i -1.644509509320207E-15 4.238197826196508E-15 2.888821605488909E-13 -2.306960946010832E-11 2.309355497522416E-11 2.657355895822991E-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 17.0   n/a MPO433635  
rotation period rot_per 3.587 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

249610 (1999 RJ176)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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