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120874 (1998 RM27)
Classification: Main-belt Asteroid          SPK-ID: 2120874
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09311552281914799 4.6663e-08  
a 3.070437279610036 2.3064e-08 au
q 2.784531907035745 1.444e-07 au
i 8.539427096260415 5.0732e-06 deg
node 317.5849157364386 3.3516e-05 deg
peri 78.80095533247227 4.6447e-05 deg
M 7.563139153807733 2.8826e-05 deg
tp 2459159.214422607512
(2020-Nov-05.71442261)
0.00015752 TDB
period 1965.163876934979
5.38
2.2142e-05
6.062e-08
d
yr
n .1831908291340484 2.0641e-09 deg/d
Q 3.356342652184327 2.5211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      677  
   data-arc span      8153 days (22.32 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54244  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:32  

Additional Information
 Earth MOID = 1.80603 au 
 Jupiter MOID = 2.04745 au 
 T_jup = 3.207 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457553.5 (2016-Jun-14.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09428203441203536 4.8282e-08  
q 2.780881547587073 1.4918e-07 au
tp 2457175.030260789335
(2015-Jun-01.53026079)
0.00016066 TDB
node 318.0344750908042 3.3485e-05 deg
peri 75.40226676314349 4.5662e-05 deg
i 8.540457619196646 5.0847e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      677  
   data-arc span      8153 days (22.32 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54244  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:32  

Additional Information
 Jupiter MOID = 2.04745 au 
 T_jup = 3.207 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.331163727763773E-15 -7.135377289313293E-15 -2.708209976043707E-12 -9.729941168128927E-15 -5.304439188190835E-13 -6.472242706714637E-15
q -7.135377289313293E-15 2.225363482335288E-14 6.949697874114254E-12 3.144864316926614E-14 1.377013576244707E-12 2.150693869573923E-14
tp -2.708209976043707E-12 6.949697874114254E-12 2.581135376157841E-8 5.903632197487472E-12 5.020929296569121E-9 9.739316178515775E-12
node -9.729941168128927E-15 3.144864316926614E-14 5.903632197487472E-12 1.121230170888699E-9 -1.107445664199963E-9 6.103326664159445E-11
peri -5.304439188190835E-13 1.377013576244707E-12 5.020929296569121E-9 -1.107445664199963E-9 2.0849895212318E-9 -5.861413641077655E-11
i -6.472242706714637E-15 2.150693869573923E-14 9.739316178515775E-12 6.103326664159445E-11 -5.861413641077655E-11 2.585401679595323E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.91   n/a E2021B55  

120874 (1998 RM27)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 RM27 = 2004 TS173 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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