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44620 (1999 RS43)
Classification: Main-belt Asteroid          SPK-ID: 2044620
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1641103607794581 4.0031e-08  
a 2.176400205390597 5.6377e-09 au
q 1.819230382483459 8.84e-08 au
i 4.399573403559296 4.399e-06 deg
node 181.9861605211814 3.7161e-05 deg
peri 181.1508942056144 3.8182e-05 deg
M 300.6281817474239 8.7892e-06 deg
tp 2459589.912443982064
(2022-Jan-10.41244398)
2.8839e-05 TDB
period 1172.753031368076
3.21
4.5568e-06
1.248e-08
d
yr
n .3069700016720841 1.1927e-09 deg/d
Q 2.533570028297734 6.5629e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1534  
   data-arc span      8510 days (23.30 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51106  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:48:43  

Additional Information
 Earth MOID = .815896 au 
 Jupiter MOID = 2.92371 au 
 T_jup = 3.663 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457085.5 (2015-Mar-04.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1641852450540415 4.0096e-08  
q 1.819039980960681 8.8504e-08 au
tp 2457243.548214458152
(2015-Aug-09.04821446)
2.7575e-05 TDB
node 182.015713398416 3.7158e-05 deg
peri 180.9067274078859 3.8175e-05 deg
i 4.398709125853767 4.4001e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1534  
   data-arc span      8510 days (23.30 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51106  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 00:48:43  

Additional Information
 Jupiter MOID = 2.92371 au 
 T_jup = 3.663 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.607700893530181E-15 -3.543856828036699E-15 8.568795622155551E-15 2.993718802750871E-15 -6.248551904814331E-15 -2.918395490298523E-15
q -3.543856828036699E-15 7.832961335160668E-15 -2.222013629769258E-14 -6.707162333396402E-15 1.200856782341294E-14 6.472548595690612E-15
tp 8.568795622155551E-15 -2.222013629769258E-14 7.603585625011905E-10 1.767277344100877E-12 2.45875081743245E-10 -1.834645030367789E-13
node 2.993718802750871E-15 -6.707162333396402E-15 1.767277344100877E-12 1.380752230405211E-9 -1.37559406210361E-9 5.776934453195395E-12
peri -6.248551904814331E-15 1.200856782341294E-14 2.45875081743245E-10 -1.37559406210361E-9 1.45731589571887E-9 -5.79450914108264E-12
i -2.918395490298523E-15 6.472548595690612E-15 -1.834645030367789E-13 5.776934453195395E-12 -5.79450914108264E-12 1.936115971270146E-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 15.61   n/a MPO636700  
rotation period rot_per 3.1393 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:
[Pravec, P.; Fatka, P.; Vokrouhlický, D.; Scheirich, P.; et al. (2019) Icarus 333, 429-463.]

44620 (1999 RS43)          Discovered 1999-Sep-12 by Korlevic, K. at Visnjan
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RS43 = 1998 HX81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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