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JPL Small-Body Database Browser
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1577 Reiss (1949 BA)
Classification: Main-belt Asteroid          SPK-ID: 2001577
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1667903833750836 3.1133e-08  
a 2.229924184932886 5.0222e-09 au
q 1.857994275230559 6.9173e-08 au
i 4.355811004334684 3.7011e-06 deg
node 123.5445731529491 4.4926e-05 deg
peri 266.3846684240435 4.6327e-05 deg
M 208.9230888713194 1.2303e-05 deg
tp 2459510.921746864177
(2021-Oct-23.42174686)
4.2416e-05 TDB
period 1216.280022528341
3.33
4.109e-06
1.125e-08
d
yr
n .2959844717762036 9.9993e-10 deg/d
Q 2.601854094635213 5.8599e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2538  
   data-arc span      32235 days (88.25 yr)  
   first obs. used      1931-10-06  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48174  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:07:02  

Additional Information
 Earth MOID = .86927 au 
 Jupiter MOID = 2.84058 au 
 T_jup = 3.621 
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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 12.6   n/a MPO473785  
diameter diameter 5.615 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.5050 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm]
[Melton, E.; Carver, S.; Harris, A.; Karnemaat, R.; et al. (2012) Minor Planet Bull. 39, 131-133.]
[Benishek, V. (2019) Minor Planet Bull. 46, 341-345.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.322   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1577 Reiss (1949 BA)          Discovered 1949-Jan-19 by Boyer, L. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2018-Jan-11 22:33 < 00:01 Hebe 0.0494387341565093 0.0494383743614956 0.0494390939523194 4.02424243442149 4.02424240317465 2458130.439785206 0.40765424530096 60.4969519389487 17.6659067773211 86.9597954230252 417852.268809018 T 30 CATAB v2.0f-lin.ifort 2020-Jan-28 18:07:48 2020-Jan-28 18:07

Alternate Designations
 1949 BA = 1931 TG3 = 1934 PX = 1981 RM5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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