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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2839730143909361 4.5729e-08  
a 2.365355800673202 1.2408e-08 au
q 1.693658583848947 1.0968e-07 au
i 5.03202676555532 6.3274e-06 deg
node 331.8593446373238 5.839e-05 deg
peri 48.89816912513322 6.0092e-05 deg
M 232.9069375649768 1.476e-05 deg
tp 2459469.596817531487
(2021-Sep-12.09681753)
5.7366e-05 TDB
period 1328.749587709977
3.64
1.0456e-05
2.863e-08
d
yr
n .270931410500333 2.1319e-09 deg/d
Q 3.037053017497457 1.5932e-08 au
  Orbit Determination Parameters
   # obs. used (total)      335  
   data-arc span      7115 days (19.48 yr)  
   first obs. used      1999-09-07  
   last obs. used      2019-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55469  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:28:53  

Additional Information
 Earth MOID = .701156 au 
 Jupiter MOID = 2.44987 au 
 T_jup = 3.488 
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Orbital Elements at Epoch 2456864.5 (2014-Jul-26.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2820532924898663 4.5434e-08  
q 1.698970120227138 1.0871e-07 au
tp 2456811.011810148768
(2014-Jun-02.51181015)
4.38e-05 TDB
node 331.9132037967098 5.8314e-05 deg
peri 48.83336393271642 6.0064e-05 deg
i 5.034844298655843 6.3288e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      335  
   data-arc span      7115 days (19.48 yr)  
   first obs. used      1999-09-07  
   last obs. used      2019-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55469  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:28:53  

Additional Information
 Jupiter MOID = 2.44987 au 
 T_jup = 3.488 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.064259949347659E-15 -4.922512022836979E-15 -4.654269530809508E-13 4.793476414857966E-14 -2.55908727159248E-13 -4.855690411041631E-15
q -4.922512022836979E-15 1.181710698113215E-14 1.317557306176172E-12 -1.182399392652418E-13 6.705308311055409E-13 1.17644007463925E-14
tp -4.654269530809508E-13 1.317557306176172E-12 1.918401902107165E-9 -3.293741439644346E-11 6.393182822576589E-10 -1.541653914373368E-13
node 4.793476414857966E-14 -1.182399392652418E-13 -3.293741439644346E-11 3.400498232043536E-9 -3.398724123634589E-9 -5.892296124389506E-11
peri -2.55908727159248E-13 6.705308311055409E-13 6.393182822576589E-10 -3.398724123634589E-9 3.60765504963983E-9 5.883377029881044E-11
i -4.855690411041631E-15 1.17644007463925E-14 -1.541653914373368E-13 -5.892296124389506E-11 5.883377029881044E-11 4.005401608773235E-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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