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46884 (1998 RY16)
Classification: Main-belt Asteroid          SPK-ID: 2046884
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2065645634429509 3.5986e-08  
a 2.451240238972743 7.4918e-09 au
q 1.944900869115544 9.0365e-08 au
i 3.374311097910653 3.7978e-06 deg
node 108.9067041257632 6.6731e-05 deg
peri 272.1144821536659 6.7432e-05 deg
M 308.6194629403443 1.1068e-05 deg
tp 2459596.566042513088
(2022-Jan-17.06604251)
4.3653e-05 TDB
period 1401.771554491304
3.84
6.4264e-06
1.759e-08
d
yr
n .2568178808070065 1.1774e-09 deg/d
Q 2.957579608829943 9.0394e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      16242 days (44.47 yr)  
   first obs. used      1977-02-19  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50976  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:53:42  

Additional Information
 Earth MOID = .950468 au 
 Jupiter MOID = 2.50708 au 
 T_jup = 3.464 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457118.5 (2015-Apr-06.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2048351595529836 3.5735e-08  
q 1.949664461973139 8.9373e-08 au
tp 2456794.552727182363
(2014-May-17.05272718)
3.8199e-05 TDB
node 108.9705598754637 6.6622e-05 deg
peri 272.2680656035082 6.7351e-05 deg
i 3.375698398715813 3.8006e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      16242 days (44.47 yr)  
   first obs. used      1977-02-19  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50976  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:53:42  

Additional Information
 Jupiter MOID = 2.50708 au 
 T_jup = 3.464 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.276957745425147E-15 -3.187387897678636E-15 -2.40065109202195E-13 1.585016093270535E-15 -8.318644358512518E-14 -3.904637081788187E-17
q -3.187387897678636E-15 7.987564962608661E-15 6.652729559904136E-13 -3.89092538131788E-15 2.257500595240597E-13 1.371829112813081E-16
tp -2.40065109202195E-13 6.652729559904136E-13 1.459129659977813E-9 -6.640112321636533E-12 3.92773728426191E-10 -1.605976625590736E-13
node 1.585016093270535E-15 -3.89092538131788E-15 -6.640112321636533E-12 4.438525898394284E-9 -4.432266696293424E-9 2.194593454205693E-11
peri -8.318644358512518E-14 2.257500595240597E-13 3.92773728426191E-10 -4.432266696293424E-9 4.536184443571503E-9 -2.193678928272344E-11
i -3.904637081788187E-17 1.371829112813081E-16 -1.605976625590736E-13 2.194593454205693E-11 -2.193678928272344E-11 1.444476661707236E-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 15.16   n/a MPO636727  
rotation period rot_per 10.650 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

46884 (1998 RY16)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RY16 = 1977 DU6 = 2000 EQ29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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